diff options
| author | Tirthendu Sarkar <tirthendu.sarkar@intel.com> | 2023-09-07 09:20:32 +0530 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2023-09-15 11:00:22 -0700 |
| commit | d609f3d228a8efe991f44f11f24146e2a5209755 (patch) | |
| tree | f10ff9bcf0ad8b1fb5eccbb30275c2aa56f35629 /include/net/xdp_sock.h | |
| parent | 5c04433daf9ed8b28d4900112be1fd19e1786b25 (diff) | |
xsk: add multi-buffer support for sockets sharing umem
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>
Diffstat (limited to 'include/net/xdp_sock.h')
| -rw-r--r-- | include/net/xdp_sock.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/net/xdp_sock.h b/include/net/xdp_sock.h index 1617af380162..69b472604b86 100644 --- a/include/net/xdp_sock.h +++ b/include/net/xdp_sock.h @@ -14,6 +14,8 @@ #include <linux/mm.h> #include <net/sock.h> +#define XDP_UMEM_SG_FLAG (1 << 1) + struct net_device; struct xsk_queue; struct xdp_buff; |