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authorDavid Ahern <dsahern@kernel.org>2020-05-29 16:07:14 -0600
committerAlexei Starovoitov <ast@kernel.org>2020-06-01 14:48:32 -0700
commit64b59025c15b244c0954cf52b24fbabfcf5ed8f6 (patch)
tree6d47a7f0f047306a1aede92a803a50e629b6c50a /kernel/bpf
parentfbee97feed9b3e4acdf9590e1f6b4a2eefecfffe (diff)
xdp: Add xdp_txq_info to xdp_buff
Add xdp_txq_info as the Tx counterpart to xdp_rxq_info. At the moment only the device is added. Other fields (queue_index) can be added as use cases arise. >From a UAPI perspective, add egress_ifindex to xdp context for bpf programs to see the Tx device. Update the verifier to only allow accesses to egress_ifindex by XDP programs with BPF_XDP_DEVMAP expected attach type. Signed-off-by: David Ahern <dsahern@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Toke Høiland-Jørgensen <toke@redhat.com> Link: https://lore.kernel.org/bpf/20200529220716.75383-4-dsahern@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'kernel/bpf')
-rw-r--r--kernel/bpf/devmap.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/bpf/devmap.c b/kernel/bpf/devmap.c
index 0089d56617ec..c04fb1c72f5e 100644
--- a/kernel/bpf/devmap.c
+++ b/kernel/bpf/devmap.c
@@ -476,8 +476,11 @@ static struct xdp_buff *dev_map_run_prog(struct net_device *dev,
struct xdp_buff *xdp,
struct bpf_prog *xdp_prog)
{
+ struct xdp_txq_info txq = { .dev = dev };
u32 act;
+ xdp->txq = &txq;
+
act = bpf_prog_run_xdp(xdp_prog, xdp);
switch (act) {
case XDP_PASS: