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iob: limit the iob bufsize is sufficient to fill all L2/L3/L4 headers 

rndis header length is 36, L2 header is 14, IPv6 header is 40, tcp header is 56 when sack option count is 4(default max_ofosegs is 4). so the iob bufsize should greater than we need.

Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
This commit is contained in:
zhanghongyu 2023-09-19 11:18:03 +08:00 committed by Xiang Xiao
parent 55d5006462
commit 13f59128fd
1 changed files with 2 additions and 0 deletions
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mm/iob/Kconfig
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@ -26,6 +26,8 @@ config IOB_NBUFFERS
config IOB_BUFSIZE
int "Payload size of one I/O buffer"
range 196 65535 if NET_TCP_SELECTIVE_ACK && NET_IPv6 && RNDIS
range 128 65535 if NET_TCP_SELECTIVE_ACK && (NET_IPv4 || NET_IPv6)
default 196
---help---
Each packet is represented by a series of small I/O buffers in a