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litespeed-quic/test/test_common.c

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LSQUIC Client: Initial release
2017-09-22 21:00:03 +00:00
/* Copyright (c) 2017 LiteSpeed Technologies Inc. See LICENSE. */
#define _GNU_SOURCE /* For struct in6_pktinfo */
#include <assert.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <sys/queue.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <unistd.h>
#include <fcntl.h>
#include <event2/event.h>
#include "test_common.h"
#include "lsquic.h"
#include "prog.h"
#include "../src/liblsquic/lsquic_logger.h"
#define MAX(a, b) ((a) > (b) ? (a) : (b))
#if __linux__
# define NDROPPED_SZ CMSG_SPACE(sizeof(uint32_t)) /* SO_RXQ_OVFL */
#else
# define NDROPPED_SZ 0
#endif
#if __linux__ && defined(IP_RECVORIGDSTADDR)
# define DST_MSG_SZ sizeof(struct sockaddr_in)
#elif __linux__
# define DST_MSG_SZ sizeof(struct in_pktinfo)
#else
# define DST_MSG_SZ sizeof(struct sockaddr_in)
#endif
#define MAX_PACKET_SZ 1370
#define CTL_SZ (CMSG_SPACE(MAX(DST_MSG_SZ, \
sizeof(struct in6_pktinfo))) + NDROPPED_SZ)
/* There are `n_alloc' elements in `vecs', `local_addresses', and
* `peer_addresses' arrays. `ctlmsg_data' is n_alloc * CTL_SZ. Each packets
* gets a single `vecs' element that points somewhere into `packet_data'.
*
* `n_alloc' is calculated at run-time based on the socket's receive buffer
* size.
*/
struct packets_in
{
unsigned char *packet_data;
unsigned char *ctlmsg_data;
struct iovec *vecs;
struct sockaddr_storage *local_addresses,
*peer_addresses;
unsigned n_alloc;
unsigned data_sz;
};
static struct packets_in *
allocate_packets_in (int fd)
{
struct packets_in *packs_in;
unsigned n_alloc;
socklen_t opt_len;
int recvsz;
opt_len = sizeof(recvsz);
if (0 != getsockopt(fd, SOL_SOCKET, SO_RCVBUF, &recvsz, &opt_len))
{
LSQ_ERROR("getsockopt failed: %s", strerror(errno));
return NULL;
}
n_alloc = (unsigned) recvsz / MAX_PACKET_SZ * 2;
LSQ_INFO("socket buffer size: %d bytes; max # packets is set to %u",
recvsz, n_alloc);
packs_in = malloc(sizeof(*packs_in));
packs_in->data_sz = recvsz;
packs_in->n_alloc = n_alloc;
packs_in->packet_data = malloc(recvsz);
packs_in->ctlmsg_data = malloc(n_alloc * CTL_SZ);
packs_in->vecs = malloc(n_alloc * sizeof(packs_in->vecs[0]));
packs_in->local_addresses = malloc(n_alloc * sizeof(packs_in->local_addresses[0]));
packs_in->peer_addresses = malloc(n_alloc * sizeof(packs_in->peer_addresses[0]));
return packs_in;
}
static void
free_packets_in (struct packets_in *packs_in)
{
free(packs_in->peer_addresses);
free(packs_in->local_addresses);
free(packs_in->ctlmsg_data);
free(packs_in->vecs);
free(packs_in->packet_data);
free(packs_in);
}
void
sport_destroy (struct service_port *sport)
{
if (sport->ev)
{
event_del(sport->ev);
event_free(sport->ev);
}
if (sport->fd >= 0)
(void) close(sport->fd);
if (sport->packs_in)
free_packets_in(sport->packs_in);
free(sport);
}
struct service_port *
sport_new (const char *optarg, struct prog *prog)
{
struct service_port *const sport = malloc(sizeof(*sport));
#if __linux__
sport->n_dropped = 0;
sport->drop_init = 0;
#endif
sport->ev = NULL;
sport->packs_in = NULL;
sport->fd = -1;
char *const addr = strdup(optarg);
#if __linux__
char *if_name;
if_name = strrchr(addr, ',');
if (if_name)
{
strncpy(sport->if_name, if_name + 1, sizeof(sport->if_name) - 1);
sport->if_name[ sizeof(sport->if_name) - 1 ] = '\0';
*if_name = '\0';
}
else
sport->if_name[0] = '\0';
#endif
char *port = strrchr(addr, ':');
if (!port)
goto err;
*port = '\0';
++port;
if ((uintptr_t) port - (uintptr_t) addr > sizeof(sport->host))
goto err;
memcpy(sport->host, addr, port - addr);
struct sockaddr_in *const sa4 = (void *) &sport->sas;
struct sockaddr_in6 *const sa6 = (void *) &sport->sas;
if (inet_pton(AF_INET, addr, &sa4->sin_addr)) {
sa4->sin_family = AF_INET;
sa4->sin_port = htons(atoi(port));
} else if (memset(sa6, 0, sizeof(*sa6)),
inet_pton(AF_INET6, addr, &sa6->sin6_addr)) {
sa6->sin6_family = AF_INET6;
sa6->sin6_port = htons(atoi(port));
} else
goto err;
free(addr);
sport->sp_prog = prog;
return sport;
err:
free(sport);
free(addr);
return NULL;
}
/* Replace IP address part of `sa' with that provided in ancillary messages
* in `msg'.
*/
static void
proc_ancillary (struct msghdr *msg, struct sockaddr_storage *storage
#if __linux__
, uint32_t *n_dropped
#endif
)
{
const struct in6_pktinfo *in6_pkt;
struct cmsghdr *cmsg;
for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg))
{
if (cmsg->cmsg_level == IPPROTO_IP &&
cmsg->cmsg_type ==
#if __linux__ && defined(IP_RECVORIGDSTADDR)
IP_ORIGDSTADDR
#elif __linux__
IP_PKTINFO
#else
IP_RECVDSTADDR
#endif
)
{
#if __linux__ && defined(IP_RECVORIGDSTADDR)
memcpy(storage, CMSG_DATA(cmsg), sizeof(struct sockaddr_in));
#elif __linux__
const struct in_pktinfo *in_pkt;
in_pkt = (void *) CMSG_DATA(cmsg);
((struct sockaddr_in *) storage)->sin_addr = in_pkt->ipi_addr;
#else
memcpy(&((struct sockaddr_in *) storage)->sin_addr,
CMSG_DATA(cmsg), sizeof(struct in_addr));
#endif
}
else if (cmsg->cmsg_level == IPPROTO_IPV6 &&
cmsg->cmsg_type == IPV6_PKTINFO)
{
in6_pkt = (void *) CMSG_DATA(cmsg);
((struct sockaddr_in6 *) storage)->sin6_addr =
in6_pkt->ipi6_addr;
}
#if __linux__
else if (cmsg->cmsg_level == SOL_SOCKET &&
cmsg->cmsg_type == SO_RXQ_OVFL)
memcpy(n_dropped, CMSG_DATA(cmsg), sizeof(*n_dropped));
#endif
}
}
struct read_iter
{
struct service_port *ri_sport;
unsigned ri_idx; /* Current element */
unsigned ri_off; /* Offset into packet_data */
};
enum rop { ROP_OK, ROP_NOROOM, ROP_ERROR, };
static enum rop
read_one_packet (struct read_iter *iter)
{
unsigned char *ctl_buf;
struct packets_in *packs_in;
#if __linux__
uint32_t n_dropped;
#endif
ssize_t nread;
struct sockaddr_storage *local_addr;
struct service_port *sport;
sport = iter->ri_sport;
packs_in = sport->packs_in;
if (iter->ri_idx >= packs_in->n_alloc ||
iter->ri_off + MAX_PACKET_SZ > packs_in->data_sz)
{
LSQ_DEBUG("out of room in packets_in");
return ROP_NOROOM;
}
packs_in->vecs[iter->ri_idx].iov_base = packs_in->packet_data + iter->ri_off;
packs_in->vecs[iter->ri_idx].iov_len = MAX_PACKET_SZ;
ctl_buf = packs_in->ctlmsg_data + iter->ri_idx * CTL_SZ;
struct msghdr msg = {
.msg_name = &packs_in->peer_addresses[iter->ri_idx],
.msg_namelen = sizeof(packs_in->peer_addresses[iter->ri_idx]),
.msg_iov = &packs_in->vecs[iter->ri_idx],
.msg_iovlen = 1,
.msg_control = ctl_buf,
.msg_controllen = CTL_SZ,
};
nread = recvmsg(sport->fd, &msg, 0);
if (-1 == nread) {
if (!(EAGAIN == errno || EWOULDBLOCK == errno))
LSQ_ERROR("recvmsg: %s", strerror(errno));
return ROP_ERROR;
}
local_addr = &packs_in->local_addresses[iter->ri_idx];
memcpy(local_addr, &sport->sas, sizeof(*local_addr));
#if __linux__
n_dropped = 0;
#endif
proc_ancillary(&msg, local_addr
#if __linux__
, &n_dropped
#endif
);
#if __linux__
if (sport->drop_init)
{
if (sport->n_dropped < n_dropped)
LSQ_INFO("dropped %u packets", n_dropped - sport->n_dropped);
}
else
sport->drop_init = 1;
sport->n_dropped = n_dropped;
#endif
packs_in->vecs[iter->ri_idx].iov_len = nread;
iter->ri_off += nread;
iter->ri_idx += 1;
return ROP_OK;
}
static void
read_handler (int fd, short flags, void *ctx)
{
struct service_port *sport = ctx;
lsquic_engine_t *const engine = sport->engine;
struct packets_in *packs_in = sport->packs_in;
struct read_iter iter;
unsigned n, n_batches;
enum rop rop;
n_batches = 0;
iter.ri_sport = sport;
do
{
iter.ri_off = 0;
iter.ri_idx = 0;
do
rop = read_one_packet(&iter);
while (ROP_OK == rop);
n_batches += iter.ri_idx > 0;
for (n = 0; n < iter.ri_idx; ++n)
if (0 != lsquic_engine_packet_in(engine,
packs_in->vecs[n].iov_base,
packs_in->vecs[n].iov_len,
(struct sockaddr *) &packs_in->local_addresses[n],
(struct sockaddr *) &packs_in->peer_addresses[n],
sport))
break;
}
while (ROP_NOROOM == rop);
if (n_batches)
{
n += packs_in->n_alloc * (n_batches - 1);
lsquic_engine_process_conns_with_incoming(engine);
}
while (lsquic_engine_has_pend_rw(engine))
lsquic_engine_process_conns_with_pend_rw(engine);
if (!prog_is_stopped())
prog_maybe_set_onetimer(sport->sp_prog);
LSQ_DEBUG("read %u packet%.*s in %u batch%s", n, n != 1, "s", n_batches, n_batches != 1 ? "es" : "");
}
static int
add_to_event_loop (struct service_port *sport, struct event_base *eb)
{
sport->ev = event_new(eb, sport->fd, EV_READ|EV_PERSIST, read_handler,
sport);
if (sport->ev)
{
event_add(sport->ev, NULL);
return 0;
}
else
return -1;
}
int
sport_init_server (struct service_port *sport, struct lsquic_engine *engine,
struct event_base *eb)
{
const struct sockaddr *sa_local = (struct sockaddr *) &sport->sas;
int sockfd, saved_errno, flags, s, on;
socklen_t socklen;
char addr_str[0x20];
switch (sa_local->sa_family)
{
case AF_INET:
socklen = sizeof(struct sockaddr_in);
break;
case AF_INET6:
socklen = sizeof(struct sockaddr_in6);
break;
default:
errno = EINVAL;
return -1;
}
sockfd = socket(sa_local->sa_family, SOCK_DGRAM, 0);
if (-1 == sockfd)
return -1;
if (0 != bind(sockfd, sa_local, socklen)) {
saved_errno = errno;
close(sockfd);
errno = saved_errno;
return -1;
}
/* Make socket non-blocking */
flags = fcntl(sockfd, F_GETFL);
if (-1 == flags) {
saved_errno = errno;
close(sockfd);
errno = saved_errno;
return -1;
}
flags |= O_NONBLOCK;
if (0 != fcntl(sockfd, F_SETFL, flags)) {
saved_errno = errno;
close(sockfd);
errno = saved_errno;
return -1;
}
on = 1;
if (AF_INET == sa_local->sa_family)
s = setsockopt(sockfd, IPPROTO_IP,
#if __linux__ && defined(IP_RECVORIGDSTADDR)
IP_RECVORIGDSTADDR,
#elif __linux__
IP_PKTINFO,
#else
IP_RECVDSTADDR,
#endif
&on, sizeof(on));
else
s = setsockopt(sockfd, IPPROTO_IPV6, IPV6_RECVPKTINFO, &on, sizeof(on));
if (0 != s)
{
saved_errno = errno;
close(sockfd);
errno = saved_errno;
return -1;
}
#if __linux__
#if !defined(IP_RECVORIGDSTADDR)
/* Need to set IP_PKTINFO for sending */
if (AF_INET == sa_local->sa_family)
{
on = 1;
s = setsockopt(sockfd, IPPROTO_IP, IP_PKTINFO, &on, sizeof(on));
if (0 != s)
{
saved_errno = errno;
close(sockfd);
errno = saved_errno;
return -1;
}
}
#endif
#elif IP_RECVDSTADDR != IP_SENDSRCADDR
/* On FreeBSD, IP_RECVDSTADDR is the same as IP_SENDSRCADDR, but I do not
* know about other BSD systems.
*/
if (AF_INET == sa_local->sa_family)
{
on = 1;
s = setsockopt(sockfd, IPPROTO_IP, IP_SENDSRCADDR, &on, sizeof(on));
if (0 != s)
{
saved_errno = errno;
close(sockfd);
errno = saved_errno;
return -1;
}
}
#endif
#if __linux__ && defined(SO_RXQ_OVFL)
on = 1;
s = setsockopt(sockfd, SOL_SOCKET, SO_RXQ_OVFL, &on, sizeof(on));
if (0 != s)
{
saved_errno = errno;
close(sockfd);
errno = saved_errno;
return -1;
}
#endif
#if __linux__
if (sport->if_name[0] &&
0 != setsockopt(sockfd, SOL_SOCKET, SO_BINDTODEVICE, sport->if_name,
IFNAMSIZ))
{
saved_errno = errno;
close(sockfd);
errno = saved_errno;
return -1;
}
#endif
if (sport->sp_flags & SPORT_DONT_FRAGMENT)
{
if (AF_INET == sa_local->sa_family)
{
#if __linux__
on = IP_PMTUDISC_DO;
s = setsockopt(sockfd, IPPROTO_IP, IP_MTU_DISCOVER, &on,
sizeof(on));
#else
on = 1;
s = setsockopt(sockfd, IPPROTO_IP, IP_DONTFRAG, &on, sizeof(on));
#endif
if (0 != s)
{
saved_errno = errno;
close(sockfd);
errno = saved_errno;
return -1;
}
}
}
if (sport->sp_flags & SPORT_SET_SNDBUF)
{
s = setsockopt(sockfd, SOL_SOCKET, SO_SNDBUF, &sport->sp_sndbuf,
sizeof(sport->sp_sndbuf));
if (0 != s)
{
saved_errno = errno;
close(sockfd);
errno = saved_errno;
return -1;
}
}
if (sport->sp_flags & SPORT_SET_RCVBUF)
{
s = setsockopt(sockfd, SOL_SOCKET, SO_RCVBUF, &sport->sp_rcvbuf,
sizeof(sport->sp_rcvbuf));
if (0 != s)
{
saved_errno = errno;
close(sockfd);
errno = saved_errno;
return -1;
}
}
if (0 != getsockname(sockfd, (struct sockaddr *) sa_local, &socklen))
{
saved_errno = errno;
close(sockfd);
errno = saved_errno;
return -1;
}
sport->packs_in = allocate_packets_in(sockfd);
if (!sport->packs_in)
{
saved_errno = errno;
close(sockfd);
errno = saved_errno;
return -1;
}
switch (sa_local->sa_family) {
case AF_INET:
LSQ_DEBUG("local address: %s:%d",
inet_ntop(AF_INET, &((struct sockaddr_in *) sa_local)->sin_addr,
addr_str, sizeof(addr_str)),
ntohs(((struct sockaddr_in *) sa_local)->sin_port));
break;
}
sport->engine = engine;
sport->fd = sockfd;
sport->sp_flags |= SPORT_SERVER;
return add_to_event_loop(sport, eb);
}
int
sport_init_client (struct service_port *sport, struct lsquic_engine *engine,
struct event_base *eb)
{
const struct sockaddr *sa_peer = (struct sockaddr *) &sport->sas;
int sockfd, saved_errno, flags, on, s;
socklen_t socklen;
union {
struct sockaddr_in sin;
struct sockaddr_in6 sin6;
} u;
struct sockaddr *sa_local = (struct sockaddr *) &u;
char addr_str[0x20];
switch (sa_peer->sa_family)
{
case AF_INET:
socklen = sizeof(struct sockaddr_in);
u.sin.sin_family = AF_INET;
u.sin.sin_addr.s_addr = INADDR_ANY;
u.sin.sin_port = 0;
break;
case AF_INET6:
socklen = sizeof(struct sockaddr_in6);
memset(&u.sin6, 0, sizeof(u.sin6));
u.sin6.sin6_family = AF_INET6;
break;
default:
errno = EINVAL;
return -1;
}
sockfd = socket(sa_peer->sa_family, SOCK_DGRAM, 0);
if (-1 == sockfd)
return -1;
if (0 != bind(sockfd, sa_local, socklen)) {
saved_errno = errno;
close(sockfd);
errno = saved_errno;
return -1;
}
/* Make socket non-blocking */
flags = fcntl(sockfd, F_GETFL);
if (-1 == flags) {
saved_errno = errno;
close(sockfd);
errno = saved_errno;
return -1;
}
flags |= O_NONBLOCK;
if (0 != fcntl(sockfd, F_SETFL, flags)) {
saved_errno = errno;
close(sockfd);
errno = saved_errno;
return -1;
}
if (sport->sp_flags & SPORT_DONT_FRAGMENT)
{
if (AF_INET == sa_local->sa_family)
{
#if __linux__
on = IP_PMTUDISC_DO;
s = setsockopt(sockfd, IPPROTO_IP, IP_MTU_DISCOVER, &on,
sizeof(on));
#else
on = 1;
s = setsockopt(sockfd, IPPROTO_IP, IP_DONTFRAG, &on, sizeof(on));
#endif
if (0 != s)
{
saved_errno = errno;
close(sockfd);
errno = saved_errno;
return -1;
}
}
}
if (sport->sp_flags & SPORT_SET_SNDBUF)
{
s = setsockopt(sockfd, SOL_SOCKET, SO_SNDBUF, &sport->sp_sndbuf,
sizeof(sport->sp_sndbuf));
if (0 != s)
{
saved_errno = errno;
close(sockfd);
errno = saved_errno;
return -1;
}
}
if (sport->sp_flags & SPORT_SET_RCVBUF)
{
s = setsockopt(sockfd, SOL_SOCKET, SO_RCVBUF, &sport->sp_rcvbuf,
sizeof(sport->sp_rcvbuf));
if (0 != s)
{
saved_errno = errno;
close(sockfd);
errno = saved_errno;
return -1;
}
}
if (0 != getsockname(sockfd, sa_local, &socklen))
{
saved_errno = errno;
close(sockfd);
errno = saved_errno;
return -1;
}
sport->packs_in = allocate_packets_in(sockfd);
if (!sport->packs_in)
{
saved_errno = errno;
close(sockfd);
errno = saved_errno;
return -1;
}
switch (sa_local->sa_family) {
case AF_INET:
LSQ_DEBUG("local address: %s:%d",
inet_ntop(AF_INET, &u.sin.sin_addr, addr_str, sizeof(addr_str)),
ntohs(u.sin.sin_port));
break;
}
sport->engine = engine;
sport->fd = sockfd;
return add_to_event_loop(sport, eb);
}
static void
setup_control_msg (struct msghdr *msg, const struct lsquic_out_spec *spec,
unsigned char *buf, size_t bufsz)
{
struct cmsghdr *cmsg;
struct sockaddr_in *local_sa;
struct sockaddr_in6 *local_sa6;
#if __linux__
struct in_pktinfo info;
#endif
struct in6_pktinfo info6;
msg->msg_control = buf;
msg->msg_controllen = bufsz;
cmsg = CMSG_FIRSTHDR(msg);
if (AF_INET == spec->dest_sa->sa_family)
{
local_sa = (struct sockaddr_in *) spec->local_sa;
#if __linux__
memset(&info, 0, sizeof(info));
info.ipi_spec_dst = local_sa->sin_addr;
cmsg->cmsg_level = IPPROTO_IP;
cmsg->cmsg_type = IP_PKTINFO;
cmsg->cmsg_len = CMSG_LEN(sizeof(info));
memcpy(CMSG_DATA(cmsg), &info, sizeof(info));
#else
cmsg->cmsg_level = IPPROTO_IP;
cmsg->cmsg_type = IP_SENDSRCADDR;
cmsg->cmsg_len = CMSG_LEN(sizeof(local_sa->sin_addr));
memcpy(CMSG_DATA(cmsg), &local_sa->sin_addr,
sizeof(local_sa->sin_addr));
#endif
}
else
{
local_sa6 = (struct sockaddr_in6 *) spec->local_sa;
memset(&info6, 0, sizeof(info6));
info6.ipi6_addr = local_sa6->sin6_addr;
cmsg->cmsg_level = IPPROTO_IPV6;
cmsg->cmsg_type = IPV6_PKTINFO;
cmsg->cmsg_len = CMSG_LEN(sizeof(info6));
memcpy(CMSG_DATA(cmsg), &info6, sizeof(info6));
}
msg->msg_controllen = cmsg->cmsg_len;
}
static int
send_packets_one_by_one (const struct lsquic_out_spec *specs, unsigned count)
{
const struct service_port *sport;
unsigned n;
int s;
struct msghdr msg;
union {
/* cmsg(3) recommends union for proper alignment */
unsigned char buf[ CMSG_SPACE(
MAX(
#if __linux__
sizeof(struct in_pktinfo)
#else
sizeof(struct in_addr)
#endif
, sizeof(struct in6_pktinfo))
)];
struct cmsghdr cmsg;
} ancil;
struct iovec iov;
if (0 == count)
return 0;
for (n = 0; n < count; ++n)
{
sport = specs[n].peer_ctx;
iov.iov_base = (void *) specs[n].buf;
iov.iov_len = specs[n].sz;
msg.msg_name = (void *) specs[n].dest_sa;
msg.msg_namelen = (AF_INET == specs[n].dest_sa->sa_family ?
sizeof(struct sockaddr_in) :
sizeof(struct sockaddr_in6)),
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
msg.msg_flags = 0;
if (sport->sp_flags & SPORT_SERVER)
setup_control_msg(&msg, &specs[n], ancil.buf, sizeof(ancil.buf));
else
{
msg.msg_control = NULL;
msg.msg_controllen = 0;
}
s = sendmsg(sport->fd, &msg, 0);
if (s < 0)
{
LSQ_INFO("sendto failed: %s", strerror(errno));
break;
}
}
if (n > 0)
return n;
else if (s < 0)
return -1;
else
return 0;
}
int
sport_packets_out (void *ctx, const struct lsquic_out_spec *specs,
unsigned count)
{
return send_packets_one_by_one(specs, count);
}
int
set_engine_option (struct lsquic_engine_settings *settings,
int *version_cleared, const char *name)
{
int len;
const char *val = strchr(name, '=');
if (!val)
return -1;
len = val - name;
++val;
switch (len)
{
case 2:
if (0 == strncmp(name, "ua", 2))
{
settings->es_ua = val;
return 0;
}
break;
case 4:
if (0 == strncmp(name, "cfcw", 4))
{
settings->es_cfcw = atoi(val);
return 0;
}
if (0 == strncmp(name, "sfcw", 4))
{
settings->es_sfcw = atoi(val);
return 0;
}
if (0 == strncmp(name, "srej", 4))
{
settings->es_support_srej = atoi(val);
return 0;
}
break;
case 7:
if (0 == strncmp(name, "version", 7))
{
if (!*version_cleared)
{
*version_cleared = 1;
settings->es_versions = 0;
}
if (0 == strcmp(val, "Q035"))
{
settings->es_versions |= 1 << LSQVER_035;
return 0;
}
if (0 == strcmp(val, "Q037"))
{
settings->es_versions |= 1 << LSQVER_037;
return 0;
}
if (0 == strcmp(val, "Q038"))
{
settings->es_versions |= 1 << LSQVER_038;
return 0;
}
if (0 == strcmp(val, "Q039"))
{
settings->es_versions |= 1 << LSQVER_039;
return 0;
}
if (0 == strcmp(val, "Q040"))
{
settings->es_versions |= 1 << LSQVER_040;
return 0;
}
}
else if (0 == strncmp(name, "rw_once", 7))
{
settings->es_rw_once = atoi(val);
return 0;
}
break;
case 8:
if (0 == strncmp(name, "max_cfcw", 8))
{
settings->es_max_cfcw = atoi(val);
return 0;
}
if (0 == strncmp(name, "max_sfcw", 8))
{
settings->es_max_sfcw = atoi(val);
return 0;
}
break;
case 10:
if (0 == strncmp(name, "honor_prst", 10))
{
settings->es_honor_prst = atoi(val);
return 0;
}
break;
case 12:
if (0 == strncmp(name, "idle_conn_to", 12))
{
settings->es_idle_conn_to = atoi(val);
return 0;
}
if (0 == strncmp(name, "silent_close", 12))
{
settings->es_silent_close = atoi(val);
return 0;
}
if (0 == strncmp(name, "support_nstp", 12))
{
settings->es_support_nstp = atoi(val);
return 0;
}
if (0 == strncmp(name, "pace_packets", 12))
{
settings->es_pace_packets = atoi(val);
return 0;
}
break;
case 13:
if (0 == strncmp(name, "support_tcid0", 13))
{
settings->es_support_tcid0 = atoi(val);
return 0;
}
break;
case 14:
if (0 == strncmp(name, "max_streams_in", 14))
{
settings->es_max_streams_in = atoi(val);
return 0;
}
if (0 == strncmp(name, "progress_check", 14))
{
settings->es_progress_check = atoi(val);
return 0;
}
break;
case 16:
if (0 == strncmp(name, "proc_time_thresh", 16))
{
settings->es_proc_time_thresh = atoi(val);
return 0;
}
break;
case 20:
if (0 == strncmp(name, "max_header_list_size", 20))
{
settings->es_max_header_list_size = atoi(val);
return 0;
}
break;
}
return -1;
}
#define MAX_PACKOUT_BUF_SZ MAX_PACKET_SZ
struct packout_buf
{
SLIST_ENTRY(packout_buf) next_free_pb;
};
void
pba_init (struct packout_buf_allocator *pba, unsigned max)
{
SLIST_INIT(&pba->free_packout_bufs);
pba->max = max;
pba->n_out = 0;
}
void *
pba_allocate (void *packout_buf_allocator, size_t size)
{
struct packout_buf_allocator *const pba = packout_buf_allocator;
struct packout_buf *pb;
if (size > MAX_PACKOUT_BUF_SZ)
{
fprintf(stderr, "packout buf size too large: %zd", size);
abort();
}
if (pba->max && pba->n_out >= pba->max)
{
LSQ_DEBUG("# outstanding packout bufs reached the limit of %u, "
"returning NULL", pba->max);
return NULL;
}
pb = SLIST_FIRST(&pba->free_packout_bufs);
if (pb)
SLIST_REMOVE_HEAD(&pba->free_packout_bufs, next_free_pb);
else
pb = malloc(MAX_PACKOUT_BUF_SZ);
if (pb)
++pba->n_out;
return pb;
}
void
pba_release (void *packout_buf_allocator, void *obj)
{
struct packout_buf_allocator *const pba = packout_buf_allocator;
struct packout_buf *const pb = obj;
SLIST_INSERT_HEAD(&pba->free_packout_bufs, pb, next_free_pb);
--pba->n_out;
}
void
pba_cleanup (struct packout_buf_allocator *pba)
{
unsigned n = 0;
struct packout_buf *pb;
if (pba->n_out)
LSQ_WARN("%u packout bufs outstanding at deinit", pba->n_out);
while ((pb = SLIST_FIRST(&pba->free_packout_bufs)))
{
SLIST_REMOVE_HEAD(&pba->free_packout_bufs, next_free_pb);
free(pb);
++n;
}
LSQ_INFO("pba deinitialized, freed %u packout bufs", n);
}
Reference in a new issue Copy permalink