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| author |   Arjun Roy <arjunroy@google.com> | 2019-12-15 11:54:51 -0800 |
|---|---|---|
| committer |   Jakub Kicinski <jakub.kicinski@netronome.com> | 2019-12-15 12:13:41 -0800 |
| commit | 0e627190563e8be6fc9c2cc2a8a3c14bd961754c (patch) | |
| tree | ee22c5074bfc6d19b54d7202ec336f8521e2d4bd /drivers | |
| parent | net/smc: shorten lgr_cnt initialization (diff) | |
| download | linux-dev-0e627190563e8be6fc9c2cc2a8a3c14bd961754c.tar.xz linux-dev-0e627190563e8be6fc9c2cc2a8a3c14bd961754c.zip | |
tcp: Set rcv zerocopy hint correctly if skb last frag is < PAGE_SIZE
At present, if the last frag of paged data in a skb has < PAGE_SIZE
data, we compute the recv_skip_hint as being equal to the size of that
frag and the entire next skb.
Instead, just return the runt frag size as the hint.
recv_skip_hint is used by the application to skip over
bytes that can not be mmaped, so returning a too big
chunk is pessimistic and forces more bytes to be copied.
Signed-off-by: Arjun Roy <arjunroy@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Diffstat (limited to 'drivers')
0 files changed, 0 insertions, 0 deletions