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path: root/tcp_splice.c
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Diffstat (limited to 'tcp_splice.c')
-rw-r--r--tcp_splice.c89
1 files changed, 45 insertions, 44 deletions
diff --git a/tcp_splice.c b/tcp_splice.c
index 9fc5656..8bc68a1 100644
--- a/tcp_splice.c
+++ b/tcp_splice.c
@@ -258,25 +258,25 @@ static void conn_event_do(const struct ctx *c, struct tcp_splice_conn *conn,
*/
bool tcp_splice_flow_defer(struct tcp_splice_conn *conn)
{
- unsigned side;
+ unsigned sidei;
if (!(conn->flags & CLOSING))
return false;
- for (side = 0; side < SIDES; side++) {
+ for (sidei = 0; sidei < SIDES; sidei++) {
/* Flushing might need to block: don't recycle them. */
- if (conn->pipe[side][0] >= 0) {
- close(conn->pipe[side][0]);
- close(conn->pipe[side][1]);
- conn->pipe[side][0] = conn->pipe[side][1] = -1;
+ if (conn->pipe[sidei][0] >= 0) {
+ close(conn->pipe[sidei][0]);
+ close(conn->pipe[sidei][1]);
+ conn->pipe[sidei][0] = conn->pipe[sidei][1] = -1;
}
- if (conn->s[side] >= 0) {
- close(conn->s[side]);
- conn->s[side] = -1;
+ if (conn->s[sidei] >= 0) {
+ close(conn->s[sidei]);
+ conn->s[sidei] = -1;
}
- conn->read[side] = conn->written[side] = 0;
+ conn->read[sidei] = conn->written[sidei] = 0;
}
conn->events = SPLICE_CLOSED;
@@ -296,33 +296,33 @@ bool tcp_splice_flow_defer(struct tcp_splice_conn *conn)
static int tcp_splice_connect_finish(const struct ctx *c,
struct tcp_splice_conn *conn)
{
- unsigned side;
+ unsigned sidei;
int i = 0;
- for (side = 0; side < SIDES; side++) {
+ for (sidei = 0; sidei < SIDES; sidei++) {
for (; i < TCP_SPLICE_PIPE_POOL_SIZE; i++) {
if (splice_pipe_pool[i][0] >= 0) {
- SWAP(conn->pipe[side][0],
+ SWAP(conn->pipe[sidei][0],
splice_pipe_pool[i][0]);
- SWAP(conn->pipe[side][1],
+ SWAP(conn->pipe[sidei][1],
splice_pipe_pool[i][1]);
break;
}
}
- if (conn->pipe[side][0] < 0) {
- if (pipe2(conn->pipe[side], O_NONBLOCK | O_CLOEXEC)) {
+ if (conn->pipe[sidei][0] < 0) {
+ if (pipe2(conn->pipe[sidei], O_NONBLOCK | O_CLOEXEC)) {
flow_err(conn, "cannot create %d->%d pipe: %s",
- side, !side, strerror(errno));
+ sidei, !sidei, strerror(errno));
conn_flag(c, conn, CLOSING);
return -EIO;
}
- if (fcntl(conn->pipe[side][0], F_SETPIPE_SZ,
+ if (fcntl(conn->pipe[sidei][0], F_SETPIPE_SZ,
c->tcp.pipe_size)) {
flow_trace(conn,
"cannot set %d->%d pipe size to %zu",
- side, !side, c->tcp.pipe_size);
+ sidei, !sidei, c->tcp.pipe_size);
}
}
}
@@ -520,7 +520,7 @@ void tcp_splice_sock_handler(struct ctx *c, union epoll_ref ref,
uint32_t events)
{
struct tcp_splice_conn *conn = conn_at_sidx(ref.flowside);
- unsigned side = ref.flowside.side, fromside;
+ unsigned evsidei = ref.flowside.sidei, fromsidei;
uint8_t lowat_set_flag, lowat_act_flag;
int eof, never_read;
@@ -552,30 +552,31 @@ void tcp_splice_sock_handler(struct ctx *c, union epoll_ref ref,
}
if (events & EPOLLOUT) {
- fromside = !side;
- conn_event(c, conn, side == 0 ? ~OUT_WAIT_0 : ~OUT_WAIT_1);
+ fromsidei = !evsidei;
+ conn_event(c, conn, evsidei == 0 ? ~OUT_WAIT_0 : ~OUT_WAIT_1);
} else {
- fromside = side;
+ fromsidei = evsidei;
}
if (events & EPOLLRDHUP)
/* For side 0 this is fake, but implied */
- conn_event(c, conn, side == 0 ? FIN_RCVD_0 : FIN_RCVD_1);
+ conn_event(c, conn, evsidei == 0 ? FIN_RCVD_0 : FIN_RCVD_1);
swap:
eof = 0;
never_read = 1;
- lowat_set_flag = fromside == 0 ? RCVLOWAT_SET_0 : RCVLOWAT_SET_1;
- lowat_act_flag = fromside == 0 ? RCVLOWAT_ACT_0 : RCVLOWAT_ACT_1;
+ lowat_set_flag = fromsidei == 0 ? RCVLOWAT_SET_0 : RCVLOWAT_SET_1;
+ lowat_act_flag = fromsidei == 0 ? RCVLOWAT_ACT_0 : RCVLOWAT_ACT_1;
while (1) {
ssize_t readlen, to_write = 0, written;
int more = 0;
retry:
- readlen = splice(conn->s[fromside], NULL,
- conn->pipe[fromside][1], NULL, c->tcp.pipe_size,
+ readlen = splice(conn->s[fromsidei], NULL,
+ conn->pipe[fromsidei][1], NULL,
+ c->tcp.pipe_size,
SPLICE_F_MOVE | SPLICE_F_NONBLOCK);
flow_trace(conn, "%zi from read-side call", readlen);
if (readlen < 0) {
@@ -600,8 +601,8 @@ retry:
}
eintr:
- written = splice(conn->pipe[fromside][0], NULL,
- conn->s[!fromside], NULL, to_write,
+ written = splice(conn->pipe[fromsidei][0], NULL,
+ conn->s[!fromsidei], NULL, to_write,
SPLICE_F_MOVE | more | SPLICE_F_NONBLOCK);
flow_trace(conn, "%zi from write-side call (passed %zi)",
written, to_write);
@@ -615,7 +616,7 @@ eintr:
readlen > (long)c->tcp.pipe_size / 10) {
int lowat = c->tcp.pipe_size / 4;
- if (setsockopt(conn->s[fromside], SOL_SOCKET,
+ if (setsockopt(conn->s[fromsidei], SOL_SOCKET,
SO_RCVLOWAT,
&lowat, sizeof(lowat))) {
flow_trace(conn,
@@ -630,8 +631,8 @@ eintr:
break;
}
- conn->read[fromside] += readlen > 0 ? readlen : 0;
- conn->written[fromside] += written > 0 ? written : 0;
+ conn->read[fromsidei] += readlen > 0 ? readlen : 0;
+ conn->written[fromsidei] += written > 0 ? written : 0;
if (written < 0) {
if (errno == EINTR)
@@ -640,11 +641,11 @@ eintr:
if (errno != EAGAIN)
goto close;
- if (conn->read[fromside] == conn->written[fromside])
+ if (conn->read[fromsidei] == conn->written[fromsidei])
break;
conn_event(c, conn,
- fromside == 0 ? OUT_WAIT_1 : OUT_WAIT_0);
+ fromsidei == 0 ? OUT_WAIT_1 : OUT_WAIT_0);
break;
}
@@ -661,14 +662,14 @@ eintr:
}
if ((conn->events & FIN_RCVD_0) && !(conn->events & FIN_SENT_1)) {
- if (conn->read[fromside] == conn->written[fromside] && eof) {
+ if (conn->read[fromsidei] == conn->written[fromsidei] && eof) {
shutdown(conn->s[1], SHUT_WR);
conn_event(c, conn, FIN_SENT_1);
}
}
if ((conn->events & FIN_RCVD_1) && !(conn->events & FIN_SENT_0)) {
- if (conn->read[fromside] == conn->written[fromside] && eof) {
+ if (conn->read[fromsidei] == conn->written[fromsidei] && eof) {
shutdown(conn->s[0], SHUT_WR);
conn_event(c, conn, FIN_SENT_0);
}
@@ -680,7 +681,7 @@ eintr:
if ((events & (EPOLLIN | EPOLLOUT)) == (EPOLLIN | EPOLLOUT)) {
events = EPOLLIN;
- fromside = !fromside;
+ fromsidei = !fromsidei;
goto swap;
}
@@ -815,19 +816,19 @@ void tcp_splice_init(struct ctx *c)
*/
void tcp_splice_timer(const struct ctx *c, struct tcp_splice_conn *conn)
{
- int side;
+ unsigned sidei;
ASSERT(!(conn->flags & CLOSING));
- for (side = 0; side < SIDES; side++) {
- uint8_t set = side == 0 ? RCVLOWAT_SET_0 : RCVLOWAT_SET_1;
- uint8_t act = side == 0 ? RCVLOWAT_ACT_0 : RCVLOWAT_ACT_1;
+ for (sidei = 0; sidei < SIDES; sidei++) {
+ uint8_t set = sidei == 0 ? RCVLOWAT_SET_0 : RCVLOWAT_SET_1;
+ uint8_t act = sidei == 0 ? RCVLOWAT_ACT_0 : RCVLOWAT_ACT_1;
if ((conn->flags & set) && !(conn->flags & act)) {
- if (setsockopt(conn->s[side], SOL_SOCKET, SO_RCVLOWAT,
+ if (setsockopt(conn->s[sidei], SOL_SOCKET, SO_RCVLOWAT,
&((int){ 1 }), sizeof(int))) {
flow_trace(conn, "can't set SO_RCVLOWAT on %d",
- conn->s[side]);
+ conn->s[sidei]);
}
conn_flag(c, conn, ~set);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-19 21:50:29 +0000