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| author | Yunjian Wang <wangyunjian@huawei.com> | 2020-12-25 05:52:16 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2020-12-29 00:34:36 +0300 |
| commit | 950271d7cc0b4546af3549d8143c4132d6e1f138 (patch) | |
| tree | 53d48680489e76aa47314f02e854797d8e07fd86 /net/mptcp/protocol.c | |
| parent | 4614792eebcbf81c60ad3604c1aeeb2b0899cea4 (diff) | |
| download | linux-950271d7cc0b4546af3549d8143c4132d6e1f138.tar.xz | |
tun: fix return value when the number of iovs exceeds MAX_SKB_FRAGS
Currently the tun_napi_alloc_frags() function returns -ENOMEM when the
number of iovs exceeds MAX_SKB_FRAGS + 1. However this is inappropriate,
we should use -EMSGSIZE instead of -ENOMEM.
The following distinctions are matters:
1. the caller need to drop the bad packet when -EMSGSIZE is returned,
which means meeting a persistent failure.
2. the caller can try again when -ENOMEM is returned, which means
meeting a transient failure.
Fixes: 90e33d459407 ("tun: enable napi_gro_frags() for TUN/TAP driver")
Signed-off-by: Yunjian Wang <wangyunjian@huawei.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Link: https://lore.kernel.org/r/1608864736-24332-1-git-send-email-wangyunjian@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/mptcp/protocol.c')
0 files changed, 0 insertions, 0 deletions