diff options
Diffstat (limited to 'net/packet/af_packet.c')
| -rw-r--r-- | net/packet/af_packet.c | 39 |
1 files changed, 30 insertions, 9 deletions
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c index b9e1a13b4ba3..7e39087d519b 100644 --- a/net/packet/af_packet.c +++ b/net/packet/af_packet.c @@ -409,6 +409,9 @@ static void __packet_set_status(struct packet_sock *po, void *frame, int status) flush_dcache_page(pgv_to_page(&h.h2->tp_status)); break; case TPACKET_V3: + h.h3->tp_status = status; + flush_dcache_page(pgv_to_page(&h.h3->tp_status)); + break; default: WARN(1, "TPACKET version not supported.\n"); BUG(); @@ -432,6 +435,8 @@ static int __packet_get_status(struct packet_sock *po, void *frame) flush_dcache_page(pgv_to_page(&h.h2->tp_status)); return h.h2->tp_status; case TPACKET_V3: + flush_dcache_page(pgv_to_page(&h.h3->tp_status)); + return h.h3->tp_status; default: WARN(1, "TPACKET version not supported.\n"); BUG(); @@ -2497,6 +2502,13 @@ static int tpacket_parse_header(struct packet_sock *po, void *frame, ph.raw = frame; switch (po->tp_version) { + case TPACKET_V3: + if (ph.h3->tp_next_offset != 0) { + pr_warn_once("variable sized slot not supported"); + return -EINVAL; + } + tp_len = ph.h3->tp_len; + break; case TPACKET_V2: tp_len = ph.h2->tp_len; break; @@ -2516,6 +2528,9 @@ static int tpacket_parse_header(struct packet_sock *po, void *frame, off_max = po->tx_ring.frame_size - tp_len; if (po->sk.sk_type == SOCK_DGRAM) { switch (po->tp_version) { + case TPACKET_V3: + off = ph.h3->tp_net; + break; case TPACKET_V2: off = ph.h2->tp_net; break; @@ -2525,6 +2540,9 @@ static int tpacket_parse_header(struct packet_sock *po, void *frame, } } else { switch (po->tp_version) { + case TPACKET_V3: + off = ph.h3->tp_mac; + break; case TPACKET_V2: off = ph.h2->tp_mac; break; @@ -4113,11 +4131,6 @@ static int packet_set_ring(struct sock *sk, union tpacket_req_u *req_u, struct tpacket_req *req = &req_u->req; lock_sock(sk); - /* Opening a Tx-ring is NOT supported in TPACKET_V3 */ - if (!closing && tx_ring && (po->tp_version > TPACKET_V2)) { - net_warn_ratelimited("Tx-ring is not supported.\n"); - goto out; - } rb = tx_ring ? &po->tx_ring : &po->rx_ring; rb_queue = tx_ring ? &sk->sk_write_queue : &sk->sk_receive_queue; @@ -4177,11 +4190,19 @@ static int packet_set_ring(struct sock *sk, union tpacket_req_u *req_u, goto out; switch (po->tp_version) { case TPACKET_V3: - /* Transmit path is not supported. We checked - * it above but just being paranoid - */ - if (!tx_ring) + /* Block transmit is not supported yet */ + if (!tx_ring) { init_prb_bdqc(po, rb, pg_vec, req_u); + } else { + struct tpacket_req3 *req3 = &req_u->req3; + + if (req3->tp_retire_blk_tov || + req3->tp_sizeof_priv || + req3->tp_feature_req_word) { + err = -EINVAL; + goto out; + } + } break; default: break; |