TCP Read-Ahead: Convert to use I/O buffer chains

TODO

@@ -1,4 +1,4 @@
-NuttX TODO List (Last updated April 23, 2014)
+NuttX TODO List (Last updated June 24, 2014)
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 This file summarizes known NuttX bugs, limitations, inconsistencies with
@@ -15,7 +15,7 @@ nuttx/
  (11)  Kernel Build
   (4)  C++ Support
   (6)  Binary loaders (binfmt/)
- (15)  Network (net/, drivers/net)
+ (13)  Network (net/, drivers/net)
   (4)  USB (drivers/usbdev, drivers/usbhost)
  (10)  Libraries (libc/, )
  (12)  File system/Generic drivers (fs/, drivers/)
@@ -816,26 +816,6 @@ o Network (net/, drivers/net)
   Status:      Open
   Priority:    Low
 
-  Title:       READ-AHEAD THROTTLING
-  Description: Read-ahead buffers capture incoming TCP data when no user
-               thread is recv-ing the data.  Should add some driver call to
-               support throttling; when there is no listener for new data, the
-               driver should be throttled.  Perhaps the driver should disable
-               RX interrupts when throttled and re-anable on each poll time.
-               recvfrom would, of course, have to un-throttle.
-  Status:      Open.  This is just a thought experiment.  No changes are planned.
-  Priority:    Low.  This is not a bug but an enhancement idea.
-
-  Title:       COMMON TCP BUFFERING
-  Description: TCP read-ahead logic and TCP write buffering logic use a
-               separate set of packet buffers.  It seems like more efficient
-               use of the buffering would be had if a common pool of packet
-               buffers were used for both read-ahead and write buffering.
-               This would probably depend on having READ-AHEAD THROTTLING to
-               prevent run-awary read-ahead logic from consuming all buffers.
-  Status:      Open.  This is just a thought experiment.  No changes are planned.
-  Priority:    Low.  This is not a bug but an enhancement idea.
-
   Title:       STANDARDIZE ETHERNET DRIVER STATISTICS
   Description: Need to standardize collection of statistics from network
                drivers.  apps/nshlib ifconfig command should present

configs/c5471evm/httpd/defconfig

@@ -347,8 +347,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=16
 CONFIG_NET_MAX_LISTENPORTS=8
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=536
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=8
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 CONFIG_NET_TCPBACKLOG=y
@@ -367,6 +365,11 @@ CONFIG_NET_ICMP=y
 CONFIG_NET_RECEIVE_WINDOW=536
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/c5471evm/nettest/defconfig

@@ -345,8 +345,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=8
 CONFIG_NET_MAX_LISTENPORTS=8
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=562
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=32
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 # CONFIG_NET_TCPBACKLOG is not set
@@ -365,6 +363,11 @@ CONFIG_NET_ICMP=y
 CONFIG_NET_RECEIVE_WINDOW=536
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/c5471evm/nsh/defconfig

@@ -348,8 +348,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=8
 CONFIG_NET_MAX_LISTENPORTS=8
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=536
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=32
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 # CONFIG_NET_TCPBACKLOG is not set
@@ -372,6 +370,11 @@ CONFIG_NET_STATISTICS=y
 CONFIG_NET_RECEIVE_WINDOW=536
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/cloudctrl/nsh/defconfig

@@ -404,8 +404,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=40
 CONFIG_NET_MAX_LISTENPORTS=40
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=536
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=16
 CONFIG_NET_TCP_RECVDELAY=0
 CONFIG_NET_TCPBACKLOG=y
 CONFIG_NET_UDP=y
@@ -420,6 +418,11 @@ CONFIG_NET_STATISTICS=y
 CONFIG_NET_RECEIVE_WINDOW=536
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 
 #
 # File Systems

configs/eagle100/httpd/defconfig

@@ -414,8 +414,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=16
 CONFIG_NET_MAX_LISTENPORTS=8
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=536
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=8
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 CONFIG_NET_TCPBACKLOG=y
@@ -434,6 +432,11 @@ CONFIG_NET_STATISTICS=y
 CONFIG_NET_RECEIVE_WINDOW=536
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/eagle100/nettest/defconfig

@@ -461,8 +461,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=8
 CONFIG_NET_MAX_LISTENPORTS=8
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=532
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=8
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 # CONFIG_NET_TCPBACKLOG is not set
@@ -481,6 +479,11 @@ CONFIG_NET_ICMP=y
 CONFIG_NET_RECEIVE_WINDOW=536
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/eagle100/nsh/defconfig

@@ -454,8 +454,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=8
 CONFIG_NET_MAX_LISTENPORTS=8
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=536
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=16
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 # CONFIG_NET_TCPBACKLOG is not set
@@ -478,6 +476,11 @@ CONFIG_NET_STATISTICS=y
 CONFIG_NET_RECEIVE_WINDOW=536
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/eagle100/thttpd/defconfig

@@ -406,8 +406,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=16
 CONFIG_NET_MAX_LISTENPORTS=8
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=536
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=8
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 CONFIG_NET_TCPBACKLOG=y
@@ -426,6 +424,11 @@ CONFIG_NET_ICMP=y
 CONFIG_NET_RECEIVE_WINDOW=536
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/ekk-lm3s9b96/nsh/defconfig

@@ -440,8 +440,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=8
 CONFIG_NET_MAX_LISTENPORTS=8
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=536
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=16
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 # CONFIG_NET_TCPBACKLOG is not set
@@ -464,6 +462,11 @@ CONFIG_NET_STATISTICS=y
 CONFIG_NET_RECEIVE_WINDOW=536
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/ez80f910200zco/httpd/defconfig

@@ -416,8 +416,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=16
 CONFIG_NET_MAX_LISTENPORTS=8
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=562
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=8
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 CONFIG_NET_TCPBACKLOG=y
@@ -436,6 +434,11 @@ CONFIG_NET_STATISTICS=y
 CONFIG_NET_RECEIVE_WINDOW=536
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/ez80f910200zco/nettest/defconfig

@@ -414,8 +414,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=8
 CONFIG_NET_MAX_LISTENPORTS=8
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=536
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=8
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 # CONFIG_NET_TCPBACKLOG is not set
@@ -434,6 +432,11 @@ CONFIG_NET_ICMP=y
 CONFIG_NET_RECEIVE_WINDOW=536
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/ez80f910200zco/nsh/defconfig

@@ -418,8 +418,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=8
 CONFIG_NET_MAX_LISTENPORTS=8
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=536
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=16
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 # CONFIG_NET_TCPBACKLOG is not set
@@ -442,6 +440,11 @@ CONFIG_NET_STATISTICS=y
 CONFIG_NET_RECEIVE_WINDOW=536
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/ez80f910200zco/poll/defconfig

@@ -416,8 +416,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=8
 CONFIG_NET_MAX_LISTENPORTS=8
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=536
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=8
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 CONFIG_NET_TCPBACKLOG=y
@@ -436,6 +434,11 @@ CONFIG_NET_ICMP=y
 CONFIG_NET_RECEIVE_WINDOW=536
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/fire-stm32v2/nsh/defconfig

@@ -449,8 +449,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=16
 CONFIG_NET_MAX_LISTENPORTS=16
 CONFIG_NET_TCP_READAHEAD=y
-# CONFIG_NET_TCP_READAHEAD_BUFSIZE=536
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=8
 CONFIG_NET_TCP_RECVDELAY=0
 # CONFIG_NET_TCPBACKLOG is not set
 CONFIG_NET_UDP=y
@@ -465,6 +463,11 @@ CONFIG_NET_STATISTICS=y
 # CONFIG_NET_RECEIVE_WINDOW=536
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 
 #
 # File Systems

configs/lm3s6432-s2e/nsh/defconfig

@@ -437,8 +437,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=8
 CONFIG_NET_MAX_LISTENPORTS=8
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=536
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=16
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 # CONFIG_NET_TCPBACKLOG is not set
@@ -461,6 +459,11 @@ CONFIG_NET_STATISTICS=y
 CONFIG_NET_RECEIVE_WINDOW=536
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/lm3s6965-ek/discover/defconfig

@@ -446,8 +446,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=8
 CONFIG_NET_MAX_LISTENPORTS=8
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=536
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=16
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 # CONFIG_NET_TCPBACKLOG is not set
@@ -470,6 +468,11 @@ CONFIG_NET_STATISTICS=y
 CONFIG_NET_RECEIVE_WINDOW=536
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/lm3s6965-ek/nsh/defconfig

@@ -446,8 +446,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=8
 CONFIG_NET_MAX_LISTENPORTS=8
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=536
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=16
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 # CONFIG_NET_TCPBACKLOG is not set
@@ -470,6 +468,11 @@ CONFIG_NET_STATISTICS=y
 CONFIG_NET_RECEIVE_WINDOW=536
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/lm3s6965-ek/tcpecho/defconfig

@@ -449,8 +449,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=16
 CONFIG_NET_MAX_LISTENPORTS=8
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=624
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=16
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 CONFIG_NET_TCPBACKLOG=y
@@ -473,6 +471,11 @@ CONFIG_NET_STATISTICS=y
 CONFIG_NET_RECEIVE_WINDOW=624
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/lm3s8962-ek/nsh/defconfig

@@ -454,8 +454,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=8
 CONFIG_NET_MAX_LISTENPORTS=8
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=536
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=16
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 # CONFIG_NET_TCPBACKLOG is not set
@@ -478,6 +476,11 @@ CONFIG_NET_STATISTICS=y
 CONFIG_NET_RECEIVE_WINDOW=536
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/lpcxpresso-lpc1768/nsh/defconfig

@@ -531,8 +531,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=8
 CONFIG_NET_MAX_LISTENPORTS=8
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=536
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=16
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 # CONFIG_NET_TCPBACKLOG is not set
@@ -555,6 +553,11 @@ CONFIG_NET_STATISTICS=y
 CONFIG_NET_RECEIVE_WINDOW=536
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/lpcxpresso-lpc1768/thttpd/defconfig

@@ -484,8 +484,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=16
 CONFIG_NET_MAX_LISTENPORTS=8
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=536
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=8
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 CONFIG_NET_TCPBACKLOG=y
@@ -504,6 +502,11 @@ CONFIG_NET_ICMP=y
 CONFIG_NET_RECEIVE_WINDOW=536
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/ntosd-dm320/nettest/defconfig

@@ -388,8 +388,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=8
 CONFIG_NET_MAX_LISTENPORTS=8
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=536
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=16
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 # CONFIG_NET_TCPBACKLOG is not set
@@ -408,6 +406,11 @@ CONFIG_NET_ICMP=y
 CONFIG_NET_RECEIVE_WINDOW=536
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/ntosd-dm320/nsh/defconfig

@@ -397,8 +397,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=8
 CONFIG_NET_MAX_LISTENPORTS=8
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=536
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=16
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 # CONFIG_NET_TCPBACKLOG is not set
@@ -421,6 +419,11 @@ CONFIG_NET_ICMP_PING=y
 CONFIG_NET_RECEIVE_WINDOW=536
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/ntosd-dm320/poll/defconfig

@@ -390,8 +390,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=8
 CONFIG_NET_MAX_LISTENPORTS=8
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=536
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=16
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 CONFIG_NET_TCPBACKLOG=y
@@ -410,6 +408,11 @@ CONFIG_NET_ICMP=y
 CONFIG_NET_RECEIVE_WINDOW=536
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/ntosd-dm320/thttpd/defconfig

@@ -389,8 +389,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=16
 CONFIG_NET_MAX_LISTENPORTS=8
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=536
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=16
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 CONFIG_NET_TCPBACKLOG=y
@@ -409,6 +407,11 @@ CONFIG_NET_ICMP=y
 CONFIG_NET_RECEIVE_WINDOW=536
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/ntosd-dm320/uip/defconfig

@@ -389,8 +389,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=8
 CONFIG_NET_MAX_LISTENPORTS=8
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=536
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=16
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 # CONFIG_NET_TCPBACKLOG is not set
@@ -409,6 +407,11 @@ CONFIG_NET_ICMP=y
 CONFIG_NET_RECEIVE_WINDOW=536
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/olimex-lpc1766stk/ftpc/defconfig

@@ -515,8 +515,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=16
 CONFIG_NET_MAX_LISTENPORTS=8
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=550
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=16
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 CONFIG_NET_TCPBACKLOG=y
@@ -539,6 +537,11 @@ CONFIG_NET_ICMP_PING=y
 CONFIG_NET_RECEIVE_WINDOW=550
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/olimex-lpc1766stk/hidmouse/defconfig

@@ -506,8 +506,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=8
 CONFIG_NET_MAX_LISTENPORTS=8
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=536
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=16
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 # CONFIG_NET_TCPBACKLOG is not set
@@ -531,6 +529,11 @@ CONFIG_NET_ICMP_PING=y
 CONFIG_NET_RECEIVE_WINDOW=536
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/olimex-lpc1766stk/nettest/defconfig

@@ -485,8 +485,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=8
 CONFIG_NET_MAX_LISTENPORTS=8
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=536
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=8
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 # CONFIG_NET_TCPBACKLOG is not set
@@ -505,6 +503,11 @@ CONFIG_NET_ICMP=y
 CONFIG_NET_RECEIVE_WINDOW=536
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/olimex-lpc1766stk/nsh/defconfig

@@ -515,8 +515,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=8
 CONFIG_NET_MAX_LISTENPORTS=8
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=536
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=16
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 # CONFIG_NET_TCPBACKLOG is not set
@@ -540,6 +538,11 @@ CONFIG_NET_ICMP_PING=y
 CONFIG_NET_RECEIVE_WINDOW=536
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/olimex-lpc1766stk/slip-httpd/defconfig

@@ -465,8 +465,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=16
 CONFIG_NET_MAX_LISTENPORTS=8
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=256
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=8
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 CONFIG_NET_TCPBACKLOG=y
@@ -485,6 +483,11 @@ CONFIG_NET_ICMP=y
 CONFIG_NET_RECEIVE_WINDOW=256
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 CONFIG_SLIP_NINTERFACES=1
 CONFIG_SLIP_STACKSIZE=2048

configs/olimex-lpc1766stk/thttpd/defconfig

@@ -485,8 +485,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=16
 CONFIG_NET_MAX_LISTENPORTS=8
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=536
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=8
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 CONFIG_NET_TCPBACKLOG=y
@@ -505,6 +503,11 @@ CONFIG_NET_ICMP=y
 CONFIG_NET_RECEIVE_WINDOW=536
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/olimex-lpc1766stk/zmodem/defconfig

@@ -529,8 +529,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=8
 CONFIG_NET_MAX_LISTENPORTS=8
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=536
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=16
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 # CONFIG_NET_TCPBACKLOG is not set
@@ -554,6 +552,11 @@ CONFIG_NET_ICMP_PING=y
 CONFIG_NET_RECEIVE_WINDOW=536
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/olimex-stm32-p107/nsh/defconfig

@@ -513,8 +513,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=40
 CONFIG_NET_MAX_LISTENPORTS=40
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=624
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=8
 CONFIG_NET_TCP_RECVDELAY=0
 # CONFIG_NET_TCPBACKLOG is not set
 # CONFIG_NET_TCP_SPLIT is not set
@@ -534,6 +532,11 @@ CONFIG_NET_ICMP_PING=y
 CONFIG_NET_RECEIVE_WINDOW=624
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 
 #
 # File Systems

configs/olimex-stm32-p207/nsh/defconfig

@@ -550,8 +550,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=8
 CONFIG_NET_MAX_LISTENPORTS=20
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=536
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=8
 CONFIG_NET_TCP_RECVDELAY=0
 # CONFIG_NET_TCPBACKLOG is not set
 # CONFIG_NET_TCP_SPLIT is not set
@@ -572,6 +570,11 @@ CONFIG_NET_STATISTICS=y
 CONFIG_NET_RECEIVE_WINDOW=536
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 
 #
 # File Systems

configs/olimex-strp711/nettest/defconfig

@@ -411,8 +411,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=8
 CONFIG_NET_MAX_LISTENPORTS=8
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=536
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=8
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 # CONFIG_NET_TCPBACKLOG is not set
@@ -431,6 +429,11 @@ CONFIG_NET_STATISTICS=y
 CONFIG_NET_RECEIVE_WINDOW=536
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/pic32-starterkit/nsh2/defconfig

@@ -553,8 +553,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=40
 CONFIG_NET_MAX_LISTENPORTS=40
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=536
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=16
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 CONFIG_NET_TCPBACKLOG=y
@@ -577,6 +575,11 @@ CONFIG_NET_ICMP_PING=y
 CONFIG_NET_RECEIVE_WINDOW=536
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/pic32mx7mmb/nsh/defconfig

@@ -606,8 +606,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=40
 CONFIG_NET_MAX_LISTENPORTS=40
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=536
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=16
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 CONFIG_NET_TCPBACKLOG=y
@@ -630,6 +628,11 @@ CONFIG_NET_ICMP_PING=y
 CONFIG_NET_RECEIVE_WINDOW=536
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/rgmp/arm/default/defconfig

@@ -312,8 +312,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=40
 CONFIG_NET_MAX_LISTENPORTS=40
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=1460
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=8
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 # CONFIG_NET_TCPBACKLOG is not set
@@ -336,6 +334,11 @@ CONFIG_NET_STATISTICS=y
 CONFIG_NET_RECEIVE_WINDOW=1460
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/rgmp/arm/nsh/defconfig

@@ -334,8 +334,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=40
 CONFIG_NET_MAX_LISTENPORTS=40
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=1460
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=8
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 # CONFIG_NET_TCPBACKLOG is not set
@@ -358,6 +356,11 @@ CONFIG_NET_STATISTICS=y
 CONFIG_NET_RECEIVE_WINDOW=1460
 CONFIG_NET_ARPTAB_SIZE=8
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/rgmp/x86/cxxtest/defconfig

@@ -341,8 +341,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=40
 CONFIG_NET_MAX_LISTENPORTS=40
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=1460
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=8
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 # CONFIG_NET_TCPBACKLOG is not set
@@ -365,6 +363,11 @@ CONFIG_NET_STATISTICS=y
 CONFIG_NET_RECEIVE_WINDOW=1460
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/rgmp/x86/default/defconfig

@@ -320,8 +320,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=40
 CONFIG_NET_MAX_LISTENPORTS=40
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=1460
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=8
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 # CONFIG_NET_TCPBACKLOG is not set
@@ -344,6 +342,11 @@ CONFIG_NET_STATISTICS=y
 CONFIG_NET_RECEIVE_WINDOW=1460
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/rgmp/x86/helloxx/defconfig

@@ -341,8 +341,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=40
 CONFIG_NET_MAX_LISTENPORTS=40
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=1460
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=8
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 # CONFIG_NET_TCPBACKLOG is not set
@@ -365,6 +363,11 @@ CONFIG_NET_STATISTICS=y
 CONFIG_NET_RECEIVE_WINDOW=1460
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/rgmp/x86/nsh/defconfig

@@ -342,8 +342,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=40
 CONFIG_NET_MAX_LISTENPORTS=40
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=1460
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=8
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 # CONFIG_NET_TCPBACKLOG is not set
@@ -366,6 +364,11 @@ CONFIG_NET_STATISTICS=y
 CONFIG_NET_RECEIVE_WINDOW=1460
 CONFIG_NET_ARPTAB_SIZE=8
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/sam4e-ek/nsh/defconfig

@@ -584,8 +584,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=16
 CONFIG_NET_MAX_LISTENPORTS=16
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=536
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=8
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 CONFIG_NET_TCPBACKLOG=y
@@ -608,6 +606,11 @@ CONFIG_NET_ICMP_PING=y
 CONFIG_NET_RECEIVE_WINDOW=536
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/sam4e-ek/usbnsh/defconfig

@@ -630,8 +630,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=16
 CONFIG_NET_MAX_LISTENPORTS=16
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=536
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=8
 # CONFIG_NET_TCP_WRITE_BUFFERS is not set
 CONFIG_NET_TCP_RECVDELAY=0
 CONFIG_NET_TCPBACKLOG=y
@@ -654,6 +652,11 @@ CONFIG_NET_ICMP_PING=y
 CONFIG_NET_RECEIVE_WINDOW=536
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/shenzhou/nsh/defconfig

@@ -404,8 +404,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=40
 CONFIG_NET_MAX_LISTENPORTS=40
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=536
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=16
 CONFIG_NET_TCP_RECVDELAY=0
 CONFIG_NET_TCPBACKLOG=y
 CONFIG_NET_UDP=y
@@ -420,6 +418,11 @@ CONFIG_NET_STATISTICS=y
 CONFIG_NET_RECEIVE_WINDOW=536
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 
 #
 # File Systems

configs/shenzhou/nxwm/defconfig

@@ -623,8 +623,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=16
 CONFIG_NET_MAX_LISTENPORTS=16
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=536
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=4
 CONFIG_NET_TCP_RECVDELAY=0
 CONFIG_NET_TCPBACKLOG=y
 # CONFIG_NET_TCP_SPLIT is not set
@@ -646,6 +644,11 @@ CONFIG_NET_STATISTICS=y
 CONFIG_NET_RECEIVE_WINDOW=536
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 # CONFIG_NET_ROUTE is not set
 
 #

configs/shenzhou/thttpd/defconfig

@@ -391,8 +391,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_TCP_CONNS=40
 CONFIG_NET_MAX_LISTENPORTS=40
 CONFIG_NET_TCP_READAHEAD=y
-CONFIG_NET_TCP_READAHEAD_BUFSIZE=742
-CONFIG_NET_NTCP_READAHEAD_BUFFERS=8
 CONFIG_NET_TCP_RECVDELAY=0
 CONFIG_NET_TCPBACKLOG=y
 CONFIG_NET_UDP=y
@@ -407,6 +405,11 @@ CONFIG_NET_STATISTICS=y
 CONFIG_NET_RECEIVE_WINDOW=742
 CONFIG_NET_ARPTAB_SIZE=16
 # CONFIG_NET_ARP_IPIN is not set
+CONFIG_NET_IOB=y
+CONFIG_IOB_NBUFFERS=24
+CONFIG_IOB_BUFSIZE=196
+CONFIG_IOB_NCHAINS=8
+CONFIG_IOB_THROTTLE=0
 
 #
 # File Systems