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authorJesper Dangaard Brouer <brouer@redhat.com>2020-05-14 12:51:15 +0200
committerAlexei Starovoitov <ast@kernel.org>2020-05-14 21:21:56 -0700
commit2a637c5b1aaf3b21418fadffad7e56ff27cee6f7 (patch)
tree4d87b314bcb0fb6fa15411505cb234946b6bb5c4 /include
parentd4ecdbf7aa2fa4feac09befb04cdaf44e6dc938b (diff)
xdp: For Intel AF_XDP drivers add XDP frame_sz
Intel drivers implement native AF_XDP zerocopy in separate C-files, that have its own invocation of bpf_prog_run_xdp(). The setup of xdp_buff is also handled in separately from normal code path. This patch update XDP frame_sz for AF_XDP zerocopy drivers i40e, ice and ixgbe, as the code changes needed are very similar. Introduce a helper function xsk_umem_xdp_frame_sz() for calculating frame size. Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Björn Töpel <bjorn.topel@intel.com> Cc: intel-wired-lan@lists.osuosl.org Cc: Magnus Karlsson <magnus.karlsson@intel.com> Link: https://lore.kernel.org/bpf/158945347511.97035.8536753731329475655.stgit@firesoul
Diffstat (limited to 'include')
-rw-r--r--include/net/xdp_sock.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/include/net/xdp_sock.h b/include/net/xdp_sock.h
index 67191ccaab85..abd72de25fa4 100644
--- a/include/net/xdp_sock.h
+++ b/include/net/xdp_sock.h
@@ -236,6 +236,12 @@ static inline u64 xsk_umem_adjust_offset(struct xdp_umem *umem, u64 address,
else
return address + offset;
}
+
+static inline u32 xsk_umem_xdp_frame_sz(struct xdp_umem *umem)
+{
+ return umem->chunk_size_nohr + umem->headroom;
+}
+
#else
static inline int xsk_generic_rcv(struct xdp_sock *xs, struct xdp_buff *xdp)
{
@@ -366,6 +372,11 @@ static inline u64 xsk_umem_adjust_offset(struct xdp_umem *umem, u64 handle,
return 0;
}
+static inline u32 xsk_umem_xdp_frame_sz(struct xdp_umem *umem)
+{
+ return 0;
+}
+
static inline int __xsk_map_redirect(struct xdp_sock *xs, struct xdp_buff *xdp)
{
return -EOPNOTSUPP;