static int
sdp_process_tx_cq(struct sdp_sock *ssk)
{
struct ib_wc ibwc[SDP_NUM_WC];
int n, i;
int wc_processed = 0;
SDP_WLOCK_ASSERT(ssk);
if (!ssk->tx_ring.cq) {
sdp_dbg(ssk->socket, "tx irq on destroyed tx_cq\n");
return 0;
}
do {
n = ib_poll_cq(ssk->tx_ring.cq, SDP_NUM_WC, ibwc);
for (i = 0; i < n; ++i) {
sdp_process_tx_wc(ssk, ibwc + i);
wc_processed++;
}
} while (n == SDP_NUM_WC);
if (wc_processed) {
sdp_post_sends(ssk, M_DONTWAIT);
sdp_prf1(sk, NULL, "Waking sendmsg. inflight=%d",
(u32) tx_ring_posted(ssk));
sowwakeup(ssk->socket);
}
return wc_processed;
}
static int sdp_process_tx_cq(struct sdp_sock *ssk)
{
struct ib_wc ibwc[SDP_NUM_WC];
int n, i;
int wc_processed = 0;
if (!ssk->tx_ring.cq) {
sdp_dbg(sk_ssk(ssk), "tx irq on destroyed tx_cq\n");
return 0;
}
do {
n = ib_poll_cq(ssk->tx_ring.cq, SDP_NUM_WC, ibwc);
for (i = 0; i < n; ++i) {
sdp_process_tx_wc(ssk, ibwc + i);
wc_processed++;
}
} while (n == SDP_NUM_WC);
if (wc_processed) {
struct sock *sk = sk_ssk(ssk);
sdp_prf1(sk, NULL, "Waking sendmsg. inflight=%d",
(u32) tx_ring_posted(ssk));
sk_mem_reclaim(sk);
sk_stream_write_space(sk_ssk(ssk));
if (sk->sk_write_pending &&
test_bit(SOCK_NOSPACE, &sk->sk_socket->flags) &&
tx_ring_posted(ssk)) {
/* a write is pending and still no room in tx queue,
* arm tx cq
*/
sdp_prf(sk_ssk(ssk), NULL, "pending tx - rearming");
sdp_arm_tx_cq(sk);
}
}
return wc_processed;
}