tcp: let tcp_mtu_probe() build headless packets

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tcp_mtu_probe() is still copying payload from skbs in the write queue,
using skb_copy_bits(), ignoring potential errors.

Modern TCP stack wants to only deal with payload found in page frags,
as this is a prereq for TCPDirect (host stack might not have access
to the payload)

Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20230607214113.1992947-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Eric Dumazet 2023-06-07 21:41:13 +00:00 • committed by Jakub Kicinski

parent f84ad5cffd

commit 736013292e

1 changed files with 58 additions and 2 deletions

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net/ipv4/tcp_output.c

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