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-rw-r--r--include/net/ipv6.h18
-rw-r--r--include/net/transp_v6.h3
-rw-r--r--net/ipv6/datagram.c13
-rw-r--r--net/ipv6/icmp.c28
-rw-r--r--net/ipv6/ip6_flowlabel.c6
-rw-r--r--net/ipv6/ip6_output.c42
-rw-r--r--net/ipv6/ipv6_sockglue.c6
-rw-r--r--net/ipv6/ping.c12
-rw-r--r--net/ipv6/raw.c33
-rw-r--r--net/ipv6/udp.c38
-rw-r--r--net/l2tp/l2tp_ip6.c33
11 files changed, 123 insertions, 109 deletions
diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 415213da5be3..11a045281948 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -251,6 +251,13 @@ struct ipv6_fl_socklist {
struct rcu_head rcu;
};
+struct ipcm6_cookie {
+ __s16 hlimit;
+ __s16 tclass;
+ __s8 dontfrag;
+ struct ipv6_txoptions *opt;
+};
+
static inline struct ipv6_txoptions *txopt_get(const struct ipv6_pinfo *np)
{
struct ipv6_txoptions *opt;
@@ -863,9 +870,9 @@ int ip6_find_1stfragopt(struct sk_buff *skb, u8 **nexthdr);
int ip6_append_data(struct sock *sk,
int getfrag(void *from, char *to, int offset, int len,
int odd, struct sk_buff *skb),
- void *from, int length, int transhdrlen, int hlimit,
- int tclass, struct ipv6_txoptions *opt, struct flowi6 *fl6,
- struct rt6_info *rt, unsigned int flags, int dontfrag,
+ void *from, int length, int transhdrlen,
+ struct ipcm6_cookie *ipc6, struct flowi6 *fl6,
+ struct rt6_info *rt, unsigned int flags,
const struct sockcm_cookie *sockc);
int ip6_push_pending_frames(struct sock *sk);
@@ -881,9 +888,8 @@ struct sk_buff *ip6_make_skb(struct sock *sk,
int getfrag(void *from, char *to, int offset,
int len, int odd, struct sk_buff *skb),
void *from, int length, int transhdrlen,
- int hlimit, int tclass, struct ipv6_txoptions *opt,
- struct flowi6 *fl6, struct rt6_info *rt,
- unsigned int flags, int dontfrag,
+ struct ipcm6_cookie *ipc6, struct flowi6 *fl6,
+ struct rt6_info *rt, unsigned int flags,
const struct sockcm_cookie *sockc);
static inline struct sk_buff *ip6_finish_skb(struct sock *sk)
diff --git a/include/net/transp_v6.h b/include/net/transp_v6.h
index 2b1c3450ab20..276f9760ab56 100644
--- a/include/net/transp_v6.h
+++ b/include/net/transp_v6.h
@@ -41,8 +41,7 @@ void ip6_datagram_recv_specific_ctl(struct sock *sk, struct msghdr *msg,
struct sk_buff *skb);
int ip6_datagram_send_ctl(struct net *net, struct sock *sk, struct msghdr *msg,
- struct flowi6 *fl6, struct ipv6_txoptions *opt,
- int *hlimit, int *tclass, int *dontfrag,
+ struct flowi6 *fl6, struct ipcm6_cookie *ipc6,
struct sockcm_cookie *sockc);
void ip6_dgram_sock_seq_show(struct seq_file *seq, struct sock *sp,
diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c
index ea9ee5cce5cf..00d0c2903173 100644
--- a/net/ipv6/datagram.c
+++ b/net/ipv6/datagram.c
@@ -727,14 +727,13 @@ EXPORT_SYMBOL_GPL(ip6_datagram_recv_ctl);
int ip6_datagram_send_ctl(struct net *net, struct sock *sk,
struct msghdr *msg, struct flowi6 *fl6,
- struct ipv6_txoptions *opt,
- int *hlimit, int *tclass, int *dontfrag,
- struct sockcm_cookie *sockc)
+ struct ipcm6_cookie *ipc6, struct sockcm_cookie *sockc)
{
struct in6_pktinfo *src_info;
struct cmsghdr *cmsg;
struct ipv6_rt_hdr *rthdr;
struct ipv6_opt_hdr *hdr;
+ struct ipv6_txoptions *opt = ipc6->opt;
int len;
int err = 0;
@@ -953,8 +952,8 @@ int ip6_datagram_send_ctl(struct net *net, struct sock *sk,
goto exit_f;
}
- *hlimit = *(int *)CMSG_DATA(cmsg);
- if (*hlimit < -1 || *hlimit > 0xff) {
+ ipc6->hlimit = *(int *)CMSG_DATA(cmsg);
+ if (ipc6->hlimit < -1 || ipc6->hlimit > 0xff) {
err = -EINVAL;
goto exit_f;
}
@@ -974,7 +973,7 @@ int ip6_datagram_send_ctl(struct net *net, struct sock *sk,
goto exit_f;
err = 0;
- *tclass = tc;
+ ipc6->tclass = tc;
break;
}
@@ -992,7 +991,7 @@ int ip6_datagram_send_ctl(struct net *net, struct sock *sk,
goto exit_f;
err = 0;
- *dontfrag = df;
+ ipc6->dontfrag = df;
break;
}
diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c
index 23b9a4cc418e..9554b99a8508 100644
--- a/net/ipv6/icmp.c
+++ b/net/ipv6/icmp.c
@@ -401,10 +401,10 @@ static void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info)
struct flowi6 fl6;
struct icmpv6_msg msg;
struct sockcm_cookie sockc_unused = {0};
+ struct ipcm6_cookie ipc6;
int iif = 0;
int addr_type = 0;
int len;
- int hlimit;
int err = 0;
u32 mark = IP6_REPLY_MARK(net, skb->mark);
@@ -507,7 +507,10 @@ static void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info)
if (IS_ERR(dst))
goto out;
- hlimit = ip6_sk_dst_hoplimit(np, &fl6, dst);
+ ipc6.hlimit = ip6_sk_dst_hoplimit(np, &fl6, dst);
+ ipc6.tclass = np->tclass;
+ ipc6.dontfrag = np->dontfrag;
+ ipc6.opt = NULL;
msg.skb = skb;
msg.offset = skb_network_offset(skb);
@@ -526,9 +529,9 @@ static void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info)
err = ip6_append_data(sk, icmpv6_getfrag, &msg,
len + sizeof(struct icmp6hdr),
- sizeof(struct icmp6hdr), hlimit,
- np->tclass, NULL, &fl6, (struct rt6_info *)dst,
- MSG_DONTWAIT, np->dontfrag, &sockc_unused);
+ sizeof(struct icmp6hdr),
+ &ipc6, &fl6, (struct rt6_info *)dst,
+ MSG_DONTWAIT, &sockc_unused);
if (err) {
ICMP6_INC_STATS(net, idev, ICMP6_MIB_OUTERRORS);
ip6_flush_pending_frames(sk);
@@ -563,9 +566,8 @@ static void icmpv6_echo_reply(struct sk_buff *skb)
struct flowi6 fl6;
struct icmpv6_msg msg;
struct dst_entry *dst;
+ struct ipcm6_cookie ipc6;
int err = 0;
- int hlimit;
- u8 tclass;
u32 mark = IP6_REPLY_MARK(net, skb->mark);
struct sockcm_cookie sockc_unused = {0};
@@ -607,19 +609,21 @@ static void icmpv6_echo_reply(struct sk_buff *skb)
if (IS_ERR(dst))
goto out;
- hlimit = ip6_sk_dst_hoplimit(np, &fl6, dst);
-
idev = __in6_dev_get(skb->dev);
msg.skb = skb;
msg.offset = 0;
msg.type = ICMPV6_ECHO_REPLY;
- tclass = ipv6_get_dsfield(ipv6_hdr(skb));
+ ipc6.hlimit = ip6_sk_dst_hoplimit(np, &fl6, dst);
+ ipc6.tclass = ipv6_get_dsfield(ipv6_hdr(skb));
+ ipc6.dontfrag = np->dontfrag;
+ ipc6.opt = NULL;
+
err = ip6_append_data(sk, icmpv6_getfrag, &msg, skb->len + sizeof(struct icmp6hdr),
- sizeof(struct icmp6hdr), hlimit, tclass, NULL, &fl6,
+ sizeof(struct icmp6hdr), &ipc6, &fl6,
(struct rt6_info *)dst, MSG_DONTWAIT,
- np->dontfrag, &sockc_unused);
+ &sockc_unused);
if (err) {
__ICMP6_INC_STATS(net, idev, ICMP6_MIB_OUTERRORS);
diff --git a/net/ipv6/ip6_flowlabel.c b/net/ipv6/ip6_flowlabel.c
index 35d3ddc328f8..b912f0dbaf72 100644
--- a/net/ipv6/ip6_flowlabel.c
+++ b/net/ipv6/ip6_flowlabel.c
@@ -373,7 +373,7 @@ fl_create(struct net *net, struct sock *sk, struct in6_flowlabel_req *freq,
struct msghdr msg;
struct flowi6 flowi6;
struct sockcm_cookie sockc_junk;
- int junk;
+ struct ipcm6_cookie ipc6;
err = -ENOMEM;
fl->opt = kmalloc(sizeof(*fl->opt) + olen, GFP_KERNEL);
@@ -390,8 +390,8 @@ fl_create(struct net *net, struct sock *sk, struct in6_flowlabel_req *freq,
msg.msg_control = (void *)(fl->opt+1);
memset(&flowi6, 0, sizeof(flowi6));
- err = ip6_datagram_send_ctl(net, sk, &msg, &flowi6, fl->opt,
- &junk, &junk, &junk, &sockc_junk);
+ ipc6.opt = fl->opt;
+ err = ip6_datagram_send_ctl(net, sk, &msg, &flowi6, &ipc6, &sockc_junk);
if (err)
goto done;
err = -EINVAL;
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 2b3ffc582d16..cbf127ae7c67 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -1182,12 +1182,12 @@ static void ip6_append_data_mtu(unsigned int *mtu,
}
static int ip6_setup_cork(struct sock *sk, struct inet_cork_full *cork,
- struct inet6_cork *v6_cork,
- int hlimit, int tclass, struct ipv6_txoptions *opt,
+ struct inet6_cork *v6_cork, struct ipcm6_cookie *ipc6,
struct rt6_info *rt, struct flowi6 *fl6)
{
struct ipv6_pinfo *np = inet6_sk(sk);
unsigned int mtu;
+ struct ipv6_txoptions *opt = ipc6->opt;
/*
* setup for corking
@@ -1229,8 +1229,8 @@ static int ip6_setup_cork(struct sock *sk, struct inet_cork_full *cork,
dst_hold(&rt->dst);
cork->base.dst = &rt->dst;
cork->fl.u.ip6 = *fl6;
- v6_cork->hop_limit = hlimit;
- v6_cork->tclass = tclass;
+ v6_cork->hop_limit = ipc6->hlimit;
+ v6_cork->tclass = ipc6->tclass;
if (rt->dst.flags & DST_XFRM_TUNNEL)
mtu = np->pmtudisc >= IPV6_PMTUDISC_PROBE ?
rt->dst.dev->mtu : dst_mtu(&rt->dst);
@@ -1258,7 +1258,7 @@ static int __ip6_append_data(struct sock *sk,
int getfrag(void *from, char *to, int offset,
int len, int odd, struct sk_buff *skb),
void *from, int length, int transhdrlen,
- unsigned int flags, int dontfrag,
+ unsigned int flags, struct ipcm6_cookie *ipc6,
const struct sockcm_cookie *sockc)
{
struct sk_buff *skb, *skb_prev = NULL;
@@ -1298,7 +1298,7 @@ static int __ip6_append_data(struct sock *sk,
sizeof(struct frag_hdr) : 0) +
rt->rt6i_nfheader_len;
- if (cork->length + length > mtu - headersize && dontfrag &&
+ if (cork->length + length > mtu - headersize && ipc6->dontfrag &&
(sk->sk_protocol == IPPROTO_UDP ||
sk->sk_protocol == IPPROTO_RAW)) {
ipv6_local_rxpmtu(sk, fl6, mtu - headersize +
@@ -1564,9 +1564,9 @@ error:
int ip6_append_data(struct sock *sk,
int getfrag(void *from, char *to, int offset, int len,
int odd, struct sk_buff *skb),
- void *from, int length, int transhdrlen, int hlimit,
- int tclass, struct ipv6_txoptions *opt, struct flowi6 *fl6,
- struct rt6_info *rt, unsigned int flags, int dontfrag,
+ void *from, int length, int transhdrlen,
+ struct ipcm6_cookie *ipc6, struct flowi6 *fl6,
+ struct rt6_info *rt, unsigned int flags,
const struct sockcm_cookie *sockc)
{
struct inet_sock *inet = inet_sk(sk);
@@ -1580,12 +1580,12 @@ int ip6_append_data(struct sock *sk,
/*
* setup for corking
*/
- err = ip6_setup_cork(sk, &inet->cork, &np->cork, hlimit,
- tclass, opt, rt, fl6);
+ err = ip6_setup_cork(sk, &inet->cork, &np->cork,
+ ipc6, rt, fl6);
if (err)
return err;
- exthdrlen = (opt ? opt->opt_flen : 0);
+ exthdrlen = (ipc6->opt ? ipc6->opt->opt_flen : 0);
length += exthdrlen;
transhdrlen += exthdrlen;
} else {
@@ -1595,8 +1595,7 @@ int ip6_append_data(struct sock *sk,
return __ip6_append_data(sk, fl6, &sk->sk_write_queue, &inet->cork.base,
&np->cork, sk_page_frag(sk), getfrag,
- from, length, transhdrlen, flags, dontfrag,
- sockc);
+ from, length, transhdrlen, flags, ipc6, sockc);
}
EXPORT_SYMBOL_GPL(ip6_append_data);
@@ -1752,15 +1751,14 @@ struct sk_buff *ip6_make_skb(struct sock *sk,
int getfrag(void *from, char *to, int offset,
int len, int odd, struct sk_buff *skb),
void *from, int length, int transhdrlen,
- int hlimit, int tclass,
- struct ipv6_txoptions *opt, struct flowi6 *fl6,
+ struct ipcm6_cookie *ipc6, struct flowi6 *fl6,
struct rt6_info *rt, unsigned int flags,
- int dontfrag, const struct sockcm_cookie *sockc)
+ const struct sockcm_cookie *sockc)
{
struct inet_cork_full cork;
struct inet6_cork v6_cork;
struct sk_buff_head queue;
- int exthdrlen = (opt ? opt->opt_flen : 0);
+ int exthdrlen = (ipc6->opt ? ipc6->opt->opt_flen : 0);
int err;
if (flags & MSG_PROBE)
@@ -1772,17 +1770,17 @@ struct sk_buff *ip6_make_skb(struct sock *sk,
cork.base.addr = 0;
cork.base.opt = NULL;
v6_cork.opt = NULL;
- err = ip6_setup_cork(sk, &cork, &v6_cork, hlimit, tclass, opt, rt, fl6);
+ err = ip6_setup_cork(sk, &cork, &v6_cork, ipc6, rt, fl6);
if (err)
return ERR_PTR(err);
- if (dontfrag < 0)
- dontfrag = inet6_sk(sk)->dontfrag;
+ if (ipc6->dontfrag < 0)
+ ipc6->dontfrag = inet6_sk(sk)->dontfrag;
err = __ip6_append_data(sk, fl6, &queue, &cork.base, &v6_cork,
&current->task_frag, getfrag, from,
length + exthdrlen, transhdrlen + exthdrlen,
- flags, dontfrag, sockc);
+ flags, ipc6, sockc);
if (err) {
__ip6_flush_pending_frames(sk, &queue, &cork, &v6_cork);
return ERR_PTR(err);
diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c
index 4ff4b29894eb..a9895e15ee9c 100644
--- a/net/ipv6/ipv6_sockglue.c
+++ b/net/ipv6/ipv6_sockglue.c
@@ -473,7 +473,7 @@ sticky_done:
struct msghdr msg;
struct flowi6 fl6;
struct sockcm_cookie sockc_junk;
- int junk;
+ struct ipcm6_cookie ipc6;
memset(&fl6, 0, sizeof(fl6));
fl6.flowi6_oif = sk->sk_bound_dev_if;
@@ -503,9 +503,9 @@ sticky_done:
msg.msg_controllen = optlen;
msg.msg_control = (void *)(opt+1);
+ ipc6.opt = opt;
- retv = ip6_datagram_send_ctl(net, sk, &msg, &fl6, opt, &junk,
- &junk, &junk, &sockc_junk);
+ retv = ip6_datagram_send_ctl(net, sk, &msg, &fl6, &ipc6, &sockc_junk);
if (retv)
goto done;
update:
diff --git a/net/ipv6/ping.c b/net/ipv6/ping.c
index da1cff79e447..3ee3e444a66b 100644
--- a/net/ipv6/ping.c
+++ b/net/ipv6/ping.c
@@ -58,11 +58,11 @@ static int ping_v6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
int iif = 0;
struct flowi6 fl6;
int err;
- int hlimit;
struct dst_entry *dst;
struct rt6_info *rt;
struct pingfakehdr pfh;
struct sockcm_cookie junk = {0};
+ struct ipcm6_cookie ipc6;
pr_debug("ping_v6_sendmsg(sk=%p,sk->num=%u)\n", inet, inet->inet_num);
@@ -139,13 +139,15 @@ static int ping_v6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
pfh.wcheck = 0;
pfh.family = AF_INET6;
- hlimit = ip6_sk_dst_hoplimit(np, &fl6, dst);
+ ipc6.hlimit = ip6_sk_dst_hoplimit(np, &fl6, dst);
+ ipc6.tclass = np->tclass;
+ ipc6.dontfrag = np->dontfrag;
+ ipc6.opt = NULL;
lock_sock(sk);
err = ip6_append_data(sk, ping_getfrag, &pfh, len,
- 0, hlimit,
- np->tclass, NULL, &fl6, rt,
- MSG_DONTWAIT, np->dontfrag, &junk);
+ 0, &ipc6, &fl6, rt,
+ MSG_DONTWAIT, &junk);
if (err) {
ICMP6_INC_STATS(sock_net(sk), rt->rt6i_idev,
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index b07ce21983aa..896350df6423 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -746,10 +746,8 @@ static int rawv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
struct raw6_frag_vec rfv;
struct flowi6 fl6;
struct sockcm_cookie sockc;
+ struct ipcm6_cookie ipc6;
int addr_len = msg->msg_namelen;
- int hlimit = -1;
- int tclass = -1;
- int dontfrag = -1;
u16 proto;
int err;
@@ -770,6 +768,11 @@ static int rawv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
fl6.flowi6_mark = sk->sk_mark;
+ ipc6.hlimit = -1;
+ ipc6.tclass = -1;
+ ipc6.dontfrag = -1;
+ ipc6.opt = NULL;
+
if (sin6) {
if (addr_len < SIN6_LEN_RFC2133)
return -EINVAL;
@@ -827,10 +830,9 @@ static int rawv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
opt = &opt_space;
memset(opt, 0, sizeof(struct ipv6_txoptions));
opt->tot_len = sizeof(struct ipv6_txoptions);
+ ipc6.opt = opt;
- err = ip6_datagram_send_ctl(sock_net(sk), sk, msg, &fl6, opt,
- &hlimit, &tclass, &dontfrag,
- &sockc);
+ err = ip6_datagram_send_ctl(sock_net(sk), sk, msg, &fl6, &ipc6, &sockc);
if (err < 0) {
fl6_sock_release(flowlabel);
return err;
@@ -846,7 +848,7 @@ static int rawv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
if (!opt) {
opt = txopt_get(np);
opt_to_free = opt;
- }
+ }
if (flowlabel)
opt = fl6_merge_options(&opt_space, flowlabel, opt);
opt = ipv6_fixup_options(&opt_space, opt);
@@ -881,14 +883,14 @@ static int rawv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
err = PTR_ERR(dst);
goto out;
}
- if (hlimit < 0)
- hlimit = ip6_sk_dst_hoplimit(np, &fl6, dst);
+ if (ipc6.hlimit < 0)
+ ipc6.hlimit = ip6_sk_dst_hoplimit(np, &fl6, dst);
- if (tclass < 0)
- tclass = np->tclass;
+ if (ipc6.tclass < 0)
+ ipc6.tclass = np->tclass;
- if (dontfrag < 0)
- dontfrag = np->dontfrag;
+ if (ipc6.dontfrag < 0)
+ ipc6.dontfrag = np->dontfrag;
if (msg->msg_flags&MSG_CONFIRM)
goto do_confirm;
@@ -897,10 +899,11 @@ back_from_confirm:
if (inet->hdrincl)
err = rawv6_send_hdrinc(sk, msg, len, &fl6, &dst, msg->msg_flags);
else {
+ ipc6.opt = opt;
lock_sock(sk);
err = ip6_append_data(sk, raw6_getfrag, &rfv,
- len, 0, hlimit, tclass, opt, &fl6, (struct rt6_info *)dst,
- msg->msg_flags, dontfrag, &sockc);
+ len, 0, &ipc6, &fl6, (struct rt6_info *)dst,
+ msg->msg_flags, &sockc);
if (err)
ip6_flush_pending_frames(sk);
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index f911c63f79e6..aca06094110f 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -1064,11 +1064,9 @@ int udpv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
struct ip6_flowlabel *flowlabel = NULL;
struct flowi6 fl6;
struct dst_entry *dst;
+ struct ipcm6_cookie ipc6;
int addr_len = msg->msg_namelen;
int ulen = len;
- int hlimit = -1;
- int tclass = -1;
- int dontfrag = -1;
int corkreq = up->corkflag || msg->msg_flags&MSG_MORE;
int err;
int connected = 0;
@@ -1076,6 +1074,10 @@ int udpv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
int (*getfrag)(void *, char *, int, int, int, struct sk_buff *);
struct sockcm_cookie sockc;
+ ipc6.hlimit = -1;
+ ipc6.tclass = -1;
+ ipc6.dontfrag = -1;
+
/* destination address check */
if (sin6) {
if (addr_len < offsetof(struct sockaddr, sa_data))
@@ -1200,10 +1202,9 @@ do_udp_sendmsg:
opt = &opt_space;
memset(opt, 0, sizeof(struct ipv6_txoptions));
opt->tot_len = sizeof(*opt);
+ ipc6.opt = opt;
- err = ip6_datagram_send_ctl(sock_net(sk), sk, msg, &fl6, opt,
- &hlimit, &tclass, &dontfrag,
- &sockc);
+ err = ip6_datagram_send_ctl(sock_net(sk), sk, msg, &fl6, &ipc6, &sockc);
if (err < 0) {
fl6_sock_release(flowlabel);
return err;
@@ -1224,6 +1225,7 @@ do_udp_sendmsg:
if (flowlabel)
opt = fl6_merge_options(&opt_space, flowlabel, opt);
opt = ipv6_fixup_options(&opt_space, opt);
+ ipc6.opt = opt;
fl6.flowi6_proto = sk->sk_protocol;
if (!ipv6_addr_any(daddr))
@@ -1253,11 +1255,11 @@ do_udp_sendmsg:
goto out;
}
- if (hlimit < 0)
- hlimit = ip6_sk_dst_hoplimit(np, &fl6, dst);
+ if (ipc6.hlimit < 0)
+ ipc6.hlimit = ip6_sk_dst_hoplimit(np, &fl6, dst);
- if (tclass < 0)
- tclass = np->tclass;
+ if (ipc6.tclass < 0)
+ ipc6.tclass = np->tclass;
if (msg->msg_flags&MSG_CONFIRM)
goto do_confirm;
@@ -1268,9 +1270,9 @@ back_from_confirm:
struct sk_buff *skb;
skb = ip6_make_skb(sk, getfrag, msg, ulen,
- sizeof(struct udphdr), hlimit, tclass, opt,
+ sizeof(struct udphdr), &ipc6,
&fl6, (struct rt6_info *)dst,
- msg->msg_flags, dontfrag, &sockc);
+ msg->msg_flags, &sockc);
err = PTR_ERR(skb);
if (!IS_ERR_OR_NULL(skb))
err = udp_v6_send_skb(skb, &fl6);
@@ -1291,14 +1293,12 @@ back_from_confirm:
up->pending = AF_INET6;
do_append_data:
- if (dontfrag < 0)
- dontfrag = np->dontfrag;
+ if (ipc6.dontfrag < 0)
+ ipc6.dontfrag = np->dontfrag;
up->len += ulen;
- err = ip6_append_data(sk, getfrag, msg, ulen,
- sizeof(struct udphdr), hlimit, tclass, opt, &fl6,
- (struct rt6_info *)dst,
- corkreq ? msg->msg_flags|MSG_MORE : msg->msg_flags, dontfrag,
- &sockc);
+ err = ip6_append_data(sk, getfrag, msg, ulen, sizeof(struct udphdr),
+ &ipc6, &fl6, (struct rt6_info *)dst,
+ corkreq ? msg->msg_flags|MSG_MORE : msg->msg_flags, &sockc);
if (err)
udp_v6_flush_pending_frames(sk);
else if (!corkreq)
diff --git a/net/l2tp/l2tp_ip6.c b/net/l2tp/l2tp_ip6.c
index 46e07267e503..c6f5df1bed12 100644
--- a/net/l2tp/l2tp_ip6.c
+++ b/net/l2tp/l2tp_ip6.c
@@ -495,10 +495,8 @@ static int l2tp_ip6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
struct dst_entry *dst = NULL;
struct flowi6 fl6;
struct sockcm_cookie sockc_unused = {0};
+ struct ipcm6_cookie ipc6;
int addr_len = msg->msg_namelen;
- int hlimit = -1;
- int tclass = -1;
- int dontfrag = -1;
int transhdrlen = 4; /* zero session-id */
int ulen = len + transhdrlen;
int err;
@@ -520,6 +518,10 @@ static int l2tp_ip6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
fl6.flowi6_mark = sk->sk_mark;
+ ipc6.hlimit = -1;
+ ipc6.tclass = -1;
+ ipc6.dontfrag = -1;
+
if (lsa) {
if (addr_len < SIN6_LEN_RFC2133)
return -EINVAL;
@@ -564,11 +566,11 @@ static int l2tp_ip6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
opt = &opt_space;
memset(opt, 0, sizeof(struct ipv6_txoptions));
opt->tot_len = sizeof(struct ipv6_txoptions);
+ ipc6.opt = opt;
- err = ip6_datagram_send_ctl(sock_net(sk), sk, msg, &fl6, opt,
- &hlimit, &tclass, &dontfrag,
- &sockc_unused);
- if (err < 0) {
+ err = ip6_datagram_send_ctl(sock_net(sk), sk, msg, &fl6, &ipc6,
+ &sockc_unused);
+ if (err < 0) {
fl6_sock_release(flowlabel);
return err;
}
@@ -588,6 +590,7 @@ static int l2tp_ip6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
if (flowlabel)
opt = fl6_merge_options(&opt_space, flowlabel, opt);
opt = ipv6_fixup_options(&opt_space, opt);
+ ipc6.opt = opt;
fl6.flowi6_proto = sk->sk_protocol;
if (!ipv6_addr_any(daddr))
@@ -612,14 +615,14 @@ static int l2tp_ip6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
goto out;
}
- if (hlimit < 0)
- hlimit = ip6_sk_dst_hoplimit(np, &fl6, dst);
+ if (ipc6.hlimit < 0)
+ ipc6.hlimit = ip6_sk_dst_hoplimit(np, &fl6, dst);
- if (tclass < 0)
- tclass = np->tclass;
+ if (ipc6.tclass < 0)
+ ipc6.tclass = np->tclass;
- if (dontfrag < 0)
- dontfrag = np->dontfrag;
+ if (ipc6.dontfrag < 0)
+ ipc6.dontfrag = np->dontfrag;
if (msg->msg_flags & MSG_CONFIRM)
goto do_confirm;
@@ -627,9 +630,9 @@ static int l2tp_ip6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
back_from_confirm:
lock_sock(sk);
err = ip6_append_data(sk, ip_generic_getfrag, msg,
- ulen, transhdrlen, hlimit, tclass, opt,
+ ulen, transhdrlen, &ipc6,
&fl6, (struct rt6_info *)dst,
- msg->msg_flags, dontfrag, &sockc_unused);
+ msg->msg_flags, &sockc_unused);
if (err)
ip6_flush_pending_frames(sk);
else if (!(msg->msg_flags & MSG_MORE))
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.