[PATCH net 0/2] ipv4: fix IP ID reuse for GSO packets

[Eric Dumazet <edumazet@kernel.org>]

This series fixes two cases where IPv4 GSO packets can reuse the IP IDs
of previous packets:

- Patch 1 fixes ip_select_ident_segs() for non-TCP sockets, which uses
  the first IP ID of the next packet since commit f866fbc842de
  ("ipv4: fix data-races around inet->inet_id"). SCTP GSO is affected.

- Patch 2 makes __ip_make_skb() reserve one IP ID per segment for
  UDP GSO packets, instead of a single one.

Both issues were found by code inspection.

Eric Dumazet (2):
  ipv4: fix IP ID reuse in ip_select_ident_segs()
  ipv4: reserve one IP ID per segment for UDP GSO packets

 include/net/ip.h     |  2 +-
 net/ipv4/ip_output.c | 15 ++++++++++++++-
 2 files changed, 15 insertions(+), 2 deletions(-)

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2.56.0.rc1.315.gc6ed9934b7-goog