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-rw-r--r--net/dccp/ccids/ccid2.c9
-rw-r--r--net/dccp/ipv4.c50
-rw-r--r--net/dccp/ipv6.c188
3 files changed, 117 insertions, 130 deletions
diff --git a/net/dccp/ccids/ccid2.c b/net/dccp/ccids/ccid2.c
index e96d5e81003..fadecd20d75 100644
--- a/net/dccp/ccids/ccid2.c
+++ b/net/dccp/ccids/ccid2.c
@@ -583,6 +583,15 @@ done:
dccp_ackvec_parsed_cleanup(&hc->tx_av_chunks);
}
+/*
+ * Convert RFC 3390 larger initial window into an equivalent number of packets.
+ * This is based on the numbers specified in RFC 5681, 3.1.
+ */
+static inline u32 rfc3390_bytes_to_packets(const u32 smss)
+{
+ return smss <= 1095 ? 4 : (smss > 2190 ? 2 : 3);
+}
+
static int ccid2_hc_tx_init(struct ccid *ccid, struct sock *sk)
{
struct ccid2_hc_tx_sock *hc = ccid_priv(ccid);
diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c
index 45a434f9416..ae451c6d83b 100644
--- a/net/dccp/ipv4.c
+++ b/net/dccp/ipv4.c
@@ -43,9 +43,9 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
struct inet_sock *inet = inet_sk(sk);
struct dccp_sock *dp = dccp_sk(sk);
const struct sockaddr_in *usin = (struct sockaddr_in *)uaddr;
+ __be16 orig_sport, orig_dport;
struct rtable *rt;
__be32 daddr, nexthop;
- int tmp;
int err;
dp->dccps_role = DCCP_ROLE_CLIENT;
@@ -63,12 +63,14 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
nexthop = inet->opt->faddr;
}
- tmp = ip_route_connect(&rt, nexthop, inet->inet_saddr,
- RT_CONN_FLAGS(sk), sk->sk_bound_dev_if,
- IPPROTO_DCCP,
- inet->inet_sport, usin->sin_port, sk, 1);
- if (tmp < 0)
- return tmp;
+ orig_sport = inet->inet_sport;
+ orig_dport = usin->sin_port;
+ rt = ip_route_connect(nexthop, inet->inet_saddr,
+ RT_CONN_FLAGS(sk), sk->sk_bound_dev_if,
+ IPPROTO_DCCP,
+ orig_sport, orig_dport, sk, true);
+ if (IS_ERR(rt))
+ return PTR_ERR(rt);
if (rt->rt_flags & (RTCF_MULTICAST | RTCF_BROADCAST)) {
ip_rt_put(rt);
@@ -99,11 +101,13 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
if (err != 0)
goto failure;
- err = ip_route_newports(&rt, IPPROTO_DCCP, inet->inet_sport,
- inet->inet_dport, sk);
- if (err != 0)
+ rt = ip_route_newports(rt, IPPROTO_DCCP,
+ orig_sport, orig_dport,
+ inet->inet_sport, inet->inet_dport, sk);
+ if (IS_ERR(rt)) {
+ rt = NULL;
goto failure;
-
+ }
/* OK, now commit destination to socket. */
sk_setup_caps(sk, &rt->dst);
@@ -461,17 +465,19 @@ static struct dst_entry* dccp_v4_route_skb(struct net *net, struct sock *sk,
struct sk_buff *skb)
{
struct rtable *rt;
- struct flowi fl = { .oif = skb_rtable(skb)->rt_iif,
- .fl4_dst = ip_hdr(skb)->saddr,
- .fl4_src = ip_hdr(skb)->daddr,
- .fl4_tos = RT_CONN_FLAGS(sk),
- .proto = sk->sk_protocol,
- .fl_ip_sport = dccp_hdr(skb)->dccph_dport,
- .fl_ip_dport = dccp_hdr(skb)->dccph_sport
- };
-
- security_skb_classify_flow(skb, &fl);
- if (ip_route_output_flow(net, &rt, &fl, sk, 0)) {
+ struct flowi4 fl4 = {
+ .flowi4_oif = skb_rtable(skb)->rt_iif,
+ .daddr = ip_hdr(skb)->saddr,
+ .saddr = ip_hdr(skb)->daddr,
+ .flowi4_tos = RT_CONN_FLAGS(sk),
+ .flowi4_proto = sk->sk_protocol,
+ .fl4_sport = dccp_hdr(skb)->dccph_dport,
+ .fl4_dport = dccp_hdr(skb)->dccph_sport,
+ };
+
+ security_skb_classify_flow(skb, flowi4_to_flowi(&fl4));
+ rt = ip_route_output_flow(net, &fl4, sk);
+ if (IS_ERR(rt)) {
IP_INC_STATS_BH(net, IPSTATS_MIB_OUTNOROUTES);
return NULL;
}
diff --git a/net/dccp/ipv6.c b/net/dccp/ipv6.c
index dca711df9b6..de1b7e37ad5 100644
--- a/net/dccp/ipv6.c
+++ b/net/dccp/ipv6.c
@@ -147,30 +147,24 @@ static void dccp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
dst = __sk_dst_check(sk, np->dst_cookie);
if (dst == NULL) {
struct inet_sock *inet = inet_sk(sk);
- struct flowi fl;
+ struct flowi6 fl6;
/* BUGGG_FUTURE: Again, it is not clear how
to handle rthdr case. Ignore this complexity
for now.
*/
- memset(&fl, 0, sizeof(fl));
- fl.proto = IPPROTO_DCCP;
- ipv6_addr_copy(&fl.fl6_dst, &np->daddr);
- ipv6_addr_copy(&fl.fl6_src, &np->saddr);
- fl.oif = sk->sk_bound_dev_if;
- fl.fl_ip_dport = inet->inet_dport;
- fl.fl_ip_sport = inet->inet_sport;
- security_sk_classify_flow(sk, &fl);
-
- err = ip6_dst_lookup(sk, &dst, &fl);
- if (err) {
- sk->sk_err_soft = -err;
- goto out;
- }
-
- err = xfrm_lookup(net, &dst, &fl, sk, 0);
- if (err < 0) {
- sk->sk_err_soft = -err;
+ memset(&fl6, 0, sizeof(fl6));
+ fl6.flowi6_proto = IPPROTO_DCCP;
+ ipv6_addr_copy(&fl6.daddr, &np->daddr);
+ ipv6_addr_copy(&fl6.saddr, &np->saddr);
+ fl6.flowi6_oif = sk->sk_bound_dev_if;
+ fl6.fl6_dport = inet->inet_dport;
+ fl6.fl6_sport = inet->inet_sport;
+ security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
+
+ dst = ip6_dst_lookup_flow(sk, &fl6, NULL, false);
+ if (IS_ERR(dst)) {
+ sk->sk_err_soft = -PTR_ERR(dst);
goto out;
}
} else
@@ -249,34 +243,30 @@ static int dccp_v6_send_response(struct sock *sk, struct request_sock *req,
struct sk_buff *skb;
struct ipv6_txoptions *opt = NULL;
struct in6_addr *final_p, final;
- struct flowi fl;
+ struct flowi6 fl6;
int err = -1;
struct dst_entry *dst;
- memset(&fl, 0, sizeof(fl));
- fl.proto = IPPROTO_DCCP;
- ipv6_addr_copy(&fl.fl6_dst, &ireq6->rmt_addr);
- ipv6_addr_copy(&fl.fl6_src, &ireq6->loc_addr);
- fl.fl6_flowlabel = 0;
- fl.oif = ireq6->iif;
- fl.fl_ip_dport = inet_rsk(req)->rmt_port;
- fl.fl_ip_sport = inet_rsk(req)->loc_port;
- security_req_classify_flow(req, &fl);
+ memset(&fl6, 0, sizeof(fl6));
+ fl6.flowi6_proto = IPPROTO_DCCP;
+ ipv6_addr_copy(&fl6.daddr, &ireq6->rmt_addr);
+ ipv6_addr_copy(&fl6.saddr, &ireq6->loc_addr);
+ fl6.flowlabel = 0;
+ fl6.flowi6_oif = ireq6->iif;
+ fl6.fl6_dport = inet_rsk(req)->rmt_port;
+ fl6.fl6_sport = inet_rsk(req)->loc_port;
+ security_req_classify_flow(req, flowi6_to_flowi(&fl6));
opt = np->opt;
- final_p = fl6_update_dst(&fl, opt, &final);
+ final_p = fl6_update_dst(&fl6, opt, &final);
- err = ip6_dst_lookup(sk, &dst, &fl);
- if (err)
- goto done;
-
- if (final_p)
- ipv6_addr_copy(&fl.fl6_dst, final_p);
-
- err = xfrm_lookup(sock_net(sk), &dst, &fl, sk, 0);
- if (err < 0)
+ dst = ip6_dst_lookup_flow(sk, &fl6, final_p, false);
+ if (IS_ERR(dst)) {
+ err = PTR_ERR(dst);
+ dst = NULL;
goto done;
+ }
skb = dccp_make_response(sk, dst, req);
if (skb != NULL) {
@@ -285,8 +275,8 @@ static int dccp_v6_send_response(struct sock *sk, struct request_sock *req,
dh->dccph_checksum = dccp_v6_csum_finish(skb,
&ireq6->loc_addr,
&ireq6->rmt_addr);
- ipv6_addr_copy(&fl.fl6_dst, &ireq6->rmt_addr);
- err = ip6_xmit(sk, skb, &fl, opt);
+ ipv6_addr_copy(&fl6.daddr, &ireq6->rmt_addr);
+ err = ip6_xmit(sk, skb, &fl6, opt);
err = net_xmit_eval(err);
}
@@ -308,7 +298,7 @@ static void dccp_v6_ctl_send_reset(struct sock *sk, struct sk_buff *rxskb)
{
struct ipv6hdr *rxip6h;
struct sk_buff *skb;
- struct flowi fl;
+ struct flowi6 fl6;
struct net *net = dev_net(skb_dst(rxskb)->dev);
struct sock *ctl_sk = net->dccp.v6_ctl_sk;
struct dst_entry *dst;
@@ -327,25 +317,24 @@ static void dccp_v6_ctl_send_reset(struct sock *sk, struct sk_buff *rxskb)
dccp_hdr(skb)->dccph_checksum = dccp_v6_csum_finish(skb, &rxip6h->saddr,
&rxip6h->daddr);
- memset(&fl, 0, sizeof(fl));
- ipv6_addr_copy(&fl.fl6_dst, &rxip6h->saddr);
- ipv6_addr_copy(&fl.fl6_src, &rxip6h->daddr);
+ memset(&fl6, 0, sizeof(fl6));
+ ipv6_addr_copy(&fl6.daddr, &rxip6h->saddr);
+ ipv6_addr_copy(&fl6.saddr, &rxip6h->daddr);
- fl.proto = IPPROTO_DCCP;
- fl.oif = inet6_iif(rxskb);
- fl.fl_ip_dport = dccp_hdr(skb)->dccph_dport;
- fl.fl_ip_sport = dccp_hdr(skb)->dccph_sport;
- security_skb_classify_flow(rxskb, &fl);
+ fl6.flowi6_proto = IPPROTO_DCCP;
+ fl6.flowi6_oif = inet6_iif(rxskb);
+ fl6.fl6_dport = dccp_hdr(skb)->dccph_dport;
+ fl6.fl6_sport = dccp_hdr(skb)->dccph_sport;
+ security_skb_classify_flow(rxskb, flowi6_to_flowi(&fl6));
/* sk = NULL, but it is safe for now. RST socket required. */
- if (!ip6_dst_lookup(ctl_sk, &dst, &fl)) {
- if (xfrm_lookup(net, &dst, &fl, NULL, 0) >= 0) {
- skb_dst_set(skb, dst);
- ip6_xmit(ctl_sk, skb, &fl, NULL);
- DCCP_INC_STATS_BH(DCCP_MIB_OUTSEGS);
- DCCP_INC_STATS_BH(DCCP_MIB_OUTRSTS);
- return;
- }
+ dst = ip6_dst_lookup_flow(ctl_sk, &fl6, NULL, false);
+ if (!IS_ERR(dst)) {
+ skb_dst_set(skb, dst);
+ ip6_xmit(ctl_sk, skb, &fl6, NULL);
+ DCCP_INC_STATS_BH(DCCP_MIB_OUTSEGS);
+ DCCP_INC_STATS_BH(DCCP_MIB_OUTRSTS);
+ return;
}
kfree_skb(skb);
@@ -484,7 +473,6 @@ static struct sock *dccp_v6_request_recv_sock(struct sock *sk,
struct inet6_request_sock *ireq6 = inet6_rsk(req);
struct ipv6_pinfo *newnp, *np = inet6_sk(sk);
struct inet_sock *newinet;
- struct dccp_sock *newdp;
struct dccp6_sock *newdp6;
struct sock *newsk;
struct ipv6_txoptions *opt;
@@ -498,7 +486,6 @@ static struct sock *dccp_v6_request_recv_sock(struct sock *sk,
return NULL;
newdp6 = (struct dccp6_sock *)newsk;
- newdp = dccp_sk(newsk);
newinet = inet_sk(newsk);
newinet->pinet6 = &newdp6->inet6;
newnp = inet6_sk(newsk);
@@ -540,25 +527,20 @@ static struct sock *dccp_v6_request_recv_sock(struct sock *sk,
if (dst == NULL) {
struct in6_addr *final_p, final;
- struct flowi fl;
-
- memset(&fl, 0, sizeof(fl));
- fl.proto = IPPROTO_DCCP;
- ipv6_addr_copy(&fl.fl6_dst, &ireq6->rmt_addr);
- final_p = fl6_update_dst(&fl, opt, &final);
- ipv6_addr_copy(&fl.fl6_src, &ireq6->loc_addr);
- fl.oif = sk->sk_bound_dev_if;
- fl.fl_ip_dport = inet_rsk(req)->rmt_port;
- fl.fl_ip_sport = inet_rsk(req)->loc_port;
- security_sk_classify_flow(sk, &fl);
-
- if (ip6_dst_lookup(sk, &dst, &fl))
- goto out;
-
- if (final_p)
- ipv6_addr_copy(&fl.fl6_dst, final_p);
-
- if ((xfrm_lookup(sock_net(sk), &dst, &fl, sk, 0)) < 0)
+ struct flowi6 fl6;
+
+ memset(&fl6, 0, sizeof(fl6));
+ fl6.flowi6_proto = IPPROTO_DCCP;
+ ipv6_addr_copy(&fl6.daddr, &ireq6->rmt_addr);
+ final_p = fl6_update_dst(&fl6, opt, &final);
+ ipv6_addr_copy(&fl6.saddr, &ireq6->loc_addr);
+ fl6.flowi6_oif = sk->sk_bound_dev_if;
+ fl6.fl6_dport = inet_rsk(req)->rmt_port;
+ fl6.fl6_sport = inet_rsk(req)->loc_port;
+ security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
+
+ dst = ip6_dst_lookup_flow(sk, &fl6, final_p, false);
+ if (IS_ERR(dst))
goto out;
}
@@ -578,7 +560,6 @@ static struct sock *dccp_v6_request_recv_sock(struct sock *sk,
newdp6 = (struct dccp6_sock *)newsk;
newinet = inet_sk(newsk);
newinet->pinet6 = &newdp6->inet6;
- newdp = dccp_sk(newsk);
newnp = inet6_sk(newsk);
memcpy(newnp, np, sizeof(struct ipv6_pinfo));
@@ -878,7 +859,7 @@ static int dccp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
struct ipv6_pinfo *np = inet6_sk(sk);
struct dccp_sock *dp = dccp_sk(sk);
struct in6_addr *saddr = NULL, *final_p, final;
- struct flowi fl;
+ struct flowi6 fl6;
struct dst_entry *dst;
int addr_type;
int err;
@@ -891,14 +872,14 @@ static int dccp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
if (usin->sin6_family != AF_INET6)
return -EAFNOSUPPORT;
- memset(&fl, 0, sizeof(fl));
+ memset(&fl6, 0, sizeof(fl6));
if (np->sndflow) {
- fl.fl6_flowlabel = usin->sin6_flowinfo & IPV6_FLOWINFO_MASK;
- IP6_ECN_flow_init(fl.fl6_flowlabel);
- if (fl.fl6_flowlabel & IPV6_FLOWLABEL_MASK) {
+ fl6.flowlabel = usin->sin6_flowinfo & IPV6_FLOWINFO_MASK;
+ IP6_ECN_flow_init(fl6.flowlabel);
+ if (fl6.flowlabel & IPV6_FLOWLABEL_MASK) {
struct ip6_flowlabel *flowlabel;
- flowlabel = fl6_sock_lookup(sk, fl.fl6_flowlabel);
+ flowlabel = fl6_sock_lookup(sk, fl6.flowlabel);
if (flowlabel == NULL)
return -EINVAL;
ipv6_addr_copy(&usin->sin6_addr, &flowlabel->dst);
@@ -935,7 +916,7 @@ static int dccp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
}
ipv6_addr_copy(&np->daddr, &usin->sin6_addr);
- np->flow_label = fl.fl6_flowlabel;
+ np->flow_label = fl6.flowlabel;
/*
* DCCP over IPv4
@@ -972,33 +953,24 @@ static int dccp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
if (!ipv6_addr_any(&np->rcv_saddr))
saddr = &np->rcv_saddr;
- fl.proto = IPPROTO_DCCP;
- ipv6_addr_copy(&fl.fl6_dst, &np->daddr);
- ipv6_addr_copy(&fl.fl6_src, saddr ? saddr : &np->saddr);
- fl.oif = sk->sk_bound_dev_if;
- fl.fl_ip_dport = usin->sin6_port;
- fl.fl_ip_sport = inet->inet_sport;
- security_sk_classify_flow(sk, &fl);
+ fl6.flowi6_proto = IPPROTO_DCCP;
+ ipv6_addr_copy(&fl6.daddr, &np->daddr);
+ ipv6_addr_copy(&fl6.saddr, saddr ? saddr : &np->saddr);
+ fl6.flowi6_oif = sk->sk_bound_dev_if;
+ fl6.fl6_dport = usin->sin6_port;
+ fl6.fl6_sport = inet->inet_sport;
+ security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
- final_p = fl6_update_dst(&fl, np->opt, &final);
+ final_p = fl6_update_dst(&fl6, np->opt, &final);
- err = ip6_dst_lookup(sk, &dst, &fl);
- if (err)
+ dst = ip6_dst_lookup_flow(sk, &fl6, final_p, true);
+ if (IS_ERR(dst)) {
+ err = PTR_ERR(dst);
goto failure;
-
- if (final_p)
- ipv6_addr_copy(&fl.fl6_dst, final_p);
-
- err = __xfrm_lookup(sock_net(sk), &dst, &fl, sk, XFRM_LOOKUP_WAIT);
- if (err < 0) {
- if (err == -EREMOTE)
- err = ip6_dst_blackhole(sk, &dst, &fl);
- if (err < 0)
- goto failure;
}
if (saddr == NULL) {
- saddr = &fl.fl6_src;
+ saddr = &fl6.saddr;
ipv6_addr_copy(&np->rcv_saddr, saddr);
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-16 06:14:49 +0000