diff options
| author | Tirthendu Sarkar <tirthendu.sarkar@intel.com> | 2023-09-07 06:50:32 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-01-10 19:16:54 +0300 |
| commit | f302f37f1630fa57d309ee8571031d169784141c (patch) | |
| tree | b2220bd15688dd93c51ed2d17ec0b9e7e8a56f21 /net/xdp/xsk.c | |
| parent | bf07fda050c80ee4ad87b3f27607dba8314d26f3 (diff) | |
| download | linux-f302f37f1630fa57d309ee8571031d169784141c.tar.xz | |
xsk: add multi-buffer support for sockets sharing umem
[ Upstream commit d609f3d228a8efe991f44f11f24146e2a5209755 ]
Userspace applications indicate their multi-buffer capability to xsk
using XSK_USE_SG socket bind flag. For sockets using shared umem the
bind flag may contain XSK_USE_SG only for the first socket. For any
subsequent socket the only option supported is XDP_SHARED_UMEM.
Add option XDP_UMEM_SG_FLAG in umem config flags to store the
multi-buffer handling capability when indicated by XSK_USE_SG option in
bing flag by the first socket. Use this to derive multi-buffer capability
for subsequent sockets in xsk core.
Signed-off-by: Tirthendu Sarkar <tirthendu.sarkar@intel.com>
Fixes: 81470b5c3c66 ("xsk: introduce XSK_USE_SG bind flag for xsk socket")
Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Link: https://lore.kernel.org/r/20230907035032.2627879-1-tirthendu.sarkar@intel.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'net/xdp/xsk.c')
| -rw-r--r-- | net/xdp/xsk.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/xdp/xsk.c b/net/xdp/xsk.c index 3515e19852d8..774a6d1916e4 100644 --- a/net/xdp/xsk.c +++ b/net/xdp/xsk.c @@ -1227,7 +1227,7 @@ static int xsk_bind(struct socket *sock, struct sockaddr *addr, int addr_len) xs->dev = dev; xs->zc = xs->umem->zc; - xs->sg = !!(flags & XDP_USE_SG); + xs->sg = !!(xs->umem->flags & XDP_UMEM_SG_FLAG); xs->queue_id = qid; xp_add_xsk(xs->pool, xs); |