本文整理汇总了C++中sock_kfree_s函数的典型用法代码示例。如果您正苦于以下问题：C++ sock_kfree_s函数的具体用法？C++ sock_kfree_s怎么用？C++ sock_kfree_s使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了sock_kfree_s函数的20个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。
示例1: ipv6_sock_mc_join
int ipv6_sock_mc_join(struct sock *sk, int ifindex, struct in6_addr *addr)
{
struct net_device *dev = NULL;
struct ipv6_mc_socklist *mc_lst;
struct ipv6_pinfo *np = &sk->net_pinfo.af_inet6;
int err;
if (!(ipv6_addr_type(addr) & IPV6_ADDR_MULTICAST))
return -EINVAL;
mc_lst = sock_kmalloc(sk, sizeof(struct ipv6_mc_socklist), GFP_KERNEL);
if (mc_lst == NULL)
return -ENOMEM;
mc_lst->next = NULL;
memcpy(&mc_lst->addr, addr, sizeof(struct in6_addr));
mc_lst->ifindex = ifindex;
if (ifindex == 0) {
struct rt6_info *rt;
rt = rt6_lookup(addr, NULL, 0, 0);
if (rt) {
dev = rt->rt6i_dev;
dev_hold(dev);
dst_release(&rt->u.dst);
}
} else
dev = dev_get_by_index(ifindex);
if (dev == NULL) {
sock_kfree_s(sk, mc_lst, sizeof(*mc_lst));
return -ENODEV;
}
/*
* now add/increase the group membership on the device
*/
err = ipv6_dev_mc_inc(dev, addr);
if (err) {
sock_kfree_s(sk, mc_lst, sizeof(*mc_lst));
dev_put(dev);
return err;
}
write_lock_bh(&ipv6_sk_mc_lock);
mc_lst->next = np->ipv6_mc_list;
np->ipv6_mc_list = mc_lst;
write_unlock_bh(&ipv6_sk_mc_lock);
dev_put(dev);
return 0;
}
开发者ID:dmgerman，项目名称:original，代码行数:56，代码来源:mcast.c
示例2: ipv6_sock_ac_drop
/*
* socket leave an anycast group
*/
int ipv6_sock_ac_drop(struct sock *sk, int ifindex, struct in6_addr *addr)
{
struct ipv6_pinfo *np = inet6_sk(sk);
struct net_device *dev;
struct ipv6_ac_socklist *pac, *prev_pac;
write_lock_bh(&ipv6_sk_ac_lock);
prev_pac = NULL;
for (pac = np->ipv6_ac_list; pac; pac = pac->acl_next) {
if ((ifindex == 0 || pac->acl_ifindex == ifindex) &&
ipv6_addr_equal(&pac->acl_addr, addr))
break;
prev_pac = pac;
}
if (!pac) {
write_unlock_bh(&ipv6_sk_ac_lock);
return -ENOENT;
}
if (prev_pac)
prev_pac->acl_next = pac->acl_next;
else
np->ipv6_ac_list = pac->acl_next;
write_unlock_bh(&ipv6_sk_ac_lock);
dev = dev_get_by_index(&init_net, pac->acl_ifindex);
if (dev) {
ipv6_dev_ac_dec(dev, &pac->acl_addr);
dev_put(dev);
}
sock_kfree_s(sk, pac, sizeof(*pac));
return 0;
}
开发者ID:acassis，项目名称:emlinux-ssd1935，代码行数:36，代码来源:anycast.c
示例3: dccp_v6_send_response
static int dccp_v6_send_response(struct sock *sk, struct request_sock *req)
{
struct inet6_request_sock *ireq6 = inet6_rsk(req);
struct ipv6_pinfo *np = inet6_sk(sk);
struct sk_buff *skb;
struct ipv6_txoptions *opt = NULL;
struct in6_addr *final_p = NULL, final;
struct flowi fl;
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);
opt = np->opt;
if (opt != NULL && opt->srcrt != NULL) {
const struct rt0_hdr *rt0 = (struct rt0_hdr *)opt->srcrt;
ipv6_addr_copy(&final, &fl.fl6_dst);
ipv6_addr_copy(&fl.fl6_dst, rt0->addr);
final_p = &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)
goto done;
skb = dccp_make_response(sk, dst, req);
if (skb != NULL) {
struct dccp_hdr *dh = dccp_hdr(skb);
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, 0);
err = net_xmit_eval(err);
}
done:
if (opt != NULL && opt != np->opt)
sock_kfree_s(sk, opt, opt->tot_len);
dst_release(dst);
return err;
}
开发者ID:AppEngine，项目名称:linux-2.6，代码行数:60，代码来源:ipv6.c
示例4: ipv6_sock_mc_drop
/*
* socket leave on multicast group
*/
int ipv6_sock_mc_drop(struct sock *sk, int ifindex, struct in6_addr *addr)
{
struct ipv6_pinfo *np = &sk->net_pinfo.af_inet6;
struct ipv6_mc_socklist *mc_lst, **lnk;
write_lock_bh(&ipv6_sk_mc_lock);
for (lnk = &np->ipv6_mc_list; (mc_lst = *lnk) !=NULL ; lnk = &mc_lst->next) {
if (mc_lst->ifindex == ifindex &&
ipv6_addr_cmp(&mc_lst->addr, addr) == 0) {
struct net_device *dev;
*lnk = mc_lst->next;
write_unlock_bh(&ipv6_sk_mc_lock);
if ((dev = dev_get_by_index(ifindex)) != NULL) {
ipv6_dev_mc_dec(dev, &mc_lst->addr);
dev_put(dev);
}
sock_kfree_s(sk, mc_lst, sizeof(*mc_lst));
return 0;
}
}
write_unlock_bh(&ipv6_sk_mc_lock);
return -ENOENT;
}
开发者ID:dmgerman，项目名称:original，代码行数:29，代码来源:mcast.c
示例5: sk_attach_filter
int sk_attach_filter(struct sock_fprog *fprog, struct sock *sk)
{
struct sk_filter *fp;
unsigned int fsize = sizeof(struct sock_filter) * fprog->len;
int err;
/* Make sure new filter is there and in the right amounts. */
if (fprog->filter == NULL || fprog->len > BPF_MAXINSNS)
return (-EINVAL);
fp = (struct sk_filter *)sock_kmalloc(sk, fsize+sizeof(*fp), GFP_KERNEL);
if(fp == NULL)
return (-ENOMEM);
if (copy_from_user(fp->insns, fprog->filter, fsize)) {
sock_kfree_s(sk, fp, fsize+sizeof(*fp));
return -EFAULT;
}
atomic_set(&fp->refcnt, 1);
fp->len = fprog->len;
if ((err = sk_chk_filter(fp->insns, fp->len))==0) {
struct sk_filter *old_fp = sk->filter;
sk->filter = fp;
synchronize_bh();
fp = old_fp;
}
if (fp)
sk_filter_release(sk, fp);
return (err);
}
开发者ID:GNUHurdTR，项目名称:hurd，代码行数:34，代码来源:filter.c
示例6: sk_attach_filter
/**
* sk_attach_filter - attach a socket filter
* @fprog: the filter program
* @sk: the socket to use
*
* Attach the user's filter code. We first run some sanity checks on
* it to make sure it does not explode on us later. If an error
* occurs or there is insufficient memory for the filter a negative
* errno code is returned. On success the return is zero.
*/
int sk_attach_filter(struct sock_fprog *fprog, struct sock *sk)
{
struct sk_filter *fp, *old_fp;
unsigned int fsize = sizeof(struct sock_filter) * fprog->len;
int err;
/* Make sure new filter is there and in the right amounts. */
if (fprog->filter == NULL)
return -EINVAL;
fp = sock_kmalloc(sk, fsize+sizeof(*fp), GFP_KERNEL);
if (!fp)
return -ENOMEM;
if (copy_from_user(fp->insns, fprog->filter, fsize)) {
sock_kfree_s(sk, fp, fsize+sizeof(*fp));
return -EFAULT;
}
atomic_set(&fp->refcnt, 1);
fp->len = fprog->len;
err = sk_chk_filter(fp->insns, fp->len);
if (err) {
sk_filter_uncharge(sk, fp);
return err;
}
old_fp = rcu_dereference_protected(sk->sk_filter,
sock_owned_by_user(sk));
rcu_assign_pointer(sk->sk_filter, fp);
if (old_fp)
sk_filter_uncharge(sk, old_fp);
return 0;
}
开发者ID:Mr-Aloof，项目名称:wl500g，代码行数:45，代码来源:filter.c
示例7: MksckPageDescSkDestruct
static void
MksckPageDescSkDestruct(struct sock *sk)
{
struct sock *mkSk = NULL;
struct MksckPageDescInfo *mpdi;
lock_sock(sk);
mpdi = sk->sk_protinfo;
while (mpdi) {
struct MksckPageDescInfo *next = mpdi->next;
MksckPageDescManage(mpdi->descs, mpdi->pages,
MANAGE_DECREMENT);
kfree(mpdi);
mpdi = next;
}
if (sk->sk_user_data) {
mkSk = (struct sock *)sk->sk_user_data;
sk->sk_user_data = NULL;
}
sk->sk_protinfo = NULL;
release_sock(sk);
if (mkSk) {
lock_sock(mkSk);
sock_kfree_s(mkSk, mkSk->sk_user_data, sizeof(int));
mkSk->sk_user_data = NULL;
release_sock(mkSk);
sock_put(mkSk);
}
}
开发者ID:Alex-V2，项目名称:One_M8_4.4.3_kernel，代码行数:29，代码来源:mksck_kernel.c
示例8: inet6_destroy_sock
int inet6_destroy_sock(struct sock *sk)
{
struct sk_buff *skb;
struct ipv6_txoptions *opt;
/*
* Release destination entry
*/
sk_dst_reset(sk);
/* Release rx options */
if ((skb = xchg(&sk->net_pinfo.af_inet6.pktoptions, NULL)) != NULL)
kfree_skb(skb);
/* Free flowlabels */
fl6_free_socklist(sk);
/* Free tx options */
if ((opt = xchg(&sk->net_pinfo.af_inet6.opt, NULL)) != NULL)
sock_kfree_s(sk, opt, opt->tot_len);
return 0;
}
开发者ID:dmgerman，项目名称:original，代码行数:26，代码来源:af_inet6.c
示例9: ipv6_sock_ac_close
void ipv6_sock_ac_close(struct sock *sk)
{
struct ipv6_pinfo *np = inet6_sk(sk);
struct net_device *dev = NULL;
struct ipv6_ac_socklist *pac;
int prev_index;
write_lock_bh(&ipv6_sk_ac_lock);
pac = np->ipv6_ac_list;
np->ipv6_ac_list = NULL;
write_unlock_bh(&ipv6_sk_ac_lock);
prev_index = 0;
while (pac) {
struct ipv6_ac_socklist *next = pac->acl_next;
if (pac->acl_ifindex != prev_index) {
if (dev)
dev_put(dev);
dev = dev_get_by_index(&init_net, pac->acl_ifindex);
prev_index = pac->acl_ifindex;
}
if (dev)
ipv6_dev_ac_dec(dev, &pac->acl_addr);
sock_kfree_s(sk, pac, sizeof(*pac));
pac = next;
}
if (dev)
dev_put(dev);
}
开发者ID:acassis，项目名称:emlinux-ssd1935，代码行数:30，代码来源:anycast.c
示例10: ipv6_sock_ac_close
void ipv6_sock_ac_close(struct sock *sk)
{
struct ipv6_pinfo *np = inet6_sk(sk);
struct net_device *dev = NULL;
struct ipv6_ac_socklist *pac;
struct net *net = sock_net(sk);
int prev_index;
if (!np->ipv6_ac_list)
return;
rtnl_lock();
pac = np->ipv6_ac_list;
np->ipv6_ac_list = NULL;
prev_index = 0;
while (pac) {
struct ipv6_ac_socklist *next = pac->acl_next;
if (pac->acl_ifindex != prev_index) {
dev = __dev_get_by_index(net, pac->acl_ifindex);
prev_index = pac->acl_ifindex;
}
if (dev)
ipv6_dev_ac_dec(dev, &pac->acl_addr);
sock_kfree_s(sk, pac, sizeof(*pac));
pac = next;
}
rtnl_unlock();
}
开发者ID:SantoshShilimkar，项目名称:linux，代码行数:30，代码来源:anycast.c
示例11: ipv6_sock_ac_drop
/*
* socket leave an anycast group
*/
int ipv6_sock_ac_drop(struct sock *sk, int ifindex, const struct in6_addr *addr)
{
struct ipv6_pinfo *np = inet6_sk(sk);
struct net_device *dev;
struct ipv6_ac_socklist *pac, *prev_pac;
struct net *net = sock_net(sk);
ASSERT_RTNL();
prev_pac = NULL;
for (pac = np->ipv6_ac_list; pac; pac = pac->acl_next) {
if ((ifindex == 0 || pac->acl_ifindex == ifindex) &&
ipv6_addr_equal(&pac->acl_addr, addr))
break;
prev_pac = pac;
}
if (!pac)
return -ENOENT;
if (prev_pac)
prev_pac->acl_next = pac->acl_next;
else
np->ipv6_ac_list = pac->acl_next;
dev = __dev_get_by_index(net, pac->acl_ifindex);
if (dev)
ipv6_dev_ac_dec(dev, &pac->acl_addr);
sock_kfree_s(sk, pac, sizeof(*pac));
return 0;
}
开发者ID:SantoshShilimkar，项目名称:linux，代码行数:33，代码来源:anycast.c
示例12: ip_mc_leave_group
int ip_mc_leave_group(struct sock *sk, struct ip_mreqn *imr)
{
struct ip_mc_socklist *iml, **imlp;
rtnl_lock();
for (imlp=&sk->protinfo.af_inet.mc_list; (iml=*imlp)!=NULL; imlp=&iml->next) {
if (iml->multi.imr_multiaddr.s_addr==imr->imr_multiaddr.s_addr &&
iml->multi.imr_address.s_addr==imr->imr_address.s_addr &&
(!imr->imr_ifindex || iml->multi.imr_ifindex==imr->imr_ifindex)) {
struct in_device *in_dev;
if (--iml->count) {
rtnl_unlock();
return 0;
}
*imlp = iml->next;
in_dev = inetdev_by_index(iml->multi.imr_ifindex);
if (in_dev) {
ip_mc_dec_group(in_dev, imr->imr_multiaddr.s_addr);
in_dev_put(in_dev);
}
rtnl_unlock();
sock_kfree_s(sk, iml, sizeof(*iml));
return 0;
}
}
rtnl_unlock();
return -EADDRNOTAVAIL;
}
开发者ID:jhbsz，项目名称:actiontec_opensource_mi424wr-rev-acd-56-0-10-14-4，代码行数:30，代码来源:igmp.c
示例13: ip_mc_join_group
int ip_mc_join_group(struct sock *sk , struct ip_mreqn *imr)
{
int err;
u32 addr = imr->imr_multiaddr.s_addr;
struct ip_mc_socklist *iml, *i;
struct in_device *in_dev;
int count = 0;
if (!MULTICAST(addr))
return -EINVAL;
rtnl_shlock();
if (!imr->imr_ifindex)
in_dev = ip_mc_find_dev(imr);
else {
in_dev = inetdev_by_index(imr->imr_ifindex);
if (in_dev)
__in_dev_put(in_dev);
}
if (!in_dev) {
iml = NULL;
err = -ENODEV;
goto done;
}
iml = (struct ip_mc_socklist *)sock_kmalloc(sk, sizeof(*iml), GFP_KERNEL);
err = -EADDRINUSE;
for (i=sk->protinfo.af_inet.mc_list; i; i=i->next) {
if (memcmp(&i->multi, imr, sizeof(*imr)) == 0) {
/* New style additions are reference counted */
if (imr->imr_address.s_addr == 0) {
i->count++;
err = 0;
}
goto done;
}
count++;
}
err = -ENOBUFS;
if (iml == NULL || count >= sysctl_igmp_max_memberships)
goto done;
memcpy(&iml->multi, imr, sizeof(*imr));
iml->next = sk->protinfo.af_inet.mc_list;
iml->count = 1;
sk->protinfo.af_inet.mc_list = iml;
ip_mc_inc_group(in_dev, addr);
iml = NULL;
err = 0;
done:
rtnl_shunlock();
if (iml)
sock_kfree_s(sk, iml, sizeof(*iml));
return err;
}
开发者ID:jhbsz，项目名称:actiontec_opensource_mi424wr-rev-acd-56-0-10-14-4，代码行数:58，代码来源:igmp.c
示例14: ip_mc_drop_socket
void ip_mc_drop_socket(struct sock *sk)
{
struct ip_mc_socklist *iml;
while ((iml=sk->ip_mc_list) != NULL) {
struct in_device *in_dev;
sk->ip_mc_list = iml->next;
if ((in_dev = inetdev_by_index(iml->multi.imr_ifindex)) != NULL)
ip_mc_dec_group(in_dev, iml->multi.imr_multiaddr.s_addr);
sock_kfree_s(sk, iml, sizeof(*iml));
}
}
开发者ID:GNUHurdTR，项目名称:hurd，代码行数:12，代码来源:igmp.c
示例15: tcp_v6_send_synack
static int tcp_v6_send_synack(struct sock *sk, struct request_sock *req,
struct request_values *rvp)
{
struct inet6_request_sock *treq = inet6_rsk(req);
struct ipv6_pinfo *np = inet6_sk(sk);
struct sk_buff * skb;
struct ipv6_txoptions *opt = NULL;
struct in6_addr * final_p, final;
struct flowi6 fl6;
struct dst_entry *dst;
int err;
memset(&fl6, 0, sizeof(fl6));
fl6.flowi6_proto = IPPROTO_TCP;
fl6.daddr = treq->rmt_addr;
fl6.saddr = treq->loc_addr;
fl6.flowlabel = 0;
fl6.flowi6_oif = treq->iif;
fl6.flowi6_mark = inet_rsk(req)->ir_mark;
fl6.fl6_dport = inet_rsk(req)->rmt_port;
fl6.fl6_sport = inet_rsk(req)->loc_port;
fl6.flowi6_uid = sock_i_uid(sk);
security_req_classify_flow(req, flowi6_to_flowi(&fl6));
opt = np->opt;
final_p = fl6_update_dst(&fl6, opt, &final);
dst = ip6_dst_lookup_flow(sk, &fl6, final_p, false);
if (IS_ERR(dst)) {
err = PTR_ERR(dst);
dst = NULL;
goto done;
}
skb = tcp_make_synack(sk, dst, req, rvp);
err = -ENOMEM;
if (skb) {
__tcp_v6_send_check(skb, &treq->loc_addr, &treq->rmt_addr);
fl6.daddr = treq->rmt_addr;
err = ip6_xmit(sk, skb, &fl6, opt, np->tclass);
err = net_xmit_eval(err);
}
done:
if (opt && opt != np->opt)
sock_kfree_s(sk, opt, opt->tot_len);
dst_release(dst);
return err;
}
开发者ID:Leoyzen，项目名称:Charm-Eye，代码行数:49，代码来源:tcp_ipv6.c
示例16: MksckSkDestruct
static void
MksckSkDestruct(struct sock *sk)
{
Mksck *mksck;
lock_sock(sk);
mksck = sk->sk_protinfo;
if (mksck != NULL) {
sk->sk_protinfo = NULL;
Mksck_CloseCommon(mksck);
}
if (sk->sk_user_data != NULL) {
sock_kfree_s(sk, sk->sk_user_data, sizeof(int));
sk->sk_user_data = NULL;
}
release_sock(sk);
}
开发者ID:Alex-V2，项目名称:One_M8_4.4.3_kernel，代码行数:20，代码来源:mksck_kernel.c
示例17: ip_mc_drop_socket
void ip_mc_drop_socket(struct sock *sk)
{
struct ip_mc_socklist *iml;
if (sk->protinfo.af_inet.mc_list == NULL)
return;
rtnl_lock();
while ((iml=sk->protinfo.af_inet.mc_list) != NULL) {
struct in_device *in_dev;
sk->protinfo.af_inet.mc_list = iml->next;
if ((in_dev = inetdev_by_index(iml->multi.imr_ifindex)) != NULL) {
ip_mc_dec_group(in_dev, iml->multi.imr_multiaddr.s_addr);
in_dev_put(in_dev);
}
sock_kfree_s(sk, iml, sizeof(*iml));
}
rtnl_unlock();
}
开发者ID:jhbsz，项目名称:actiontec_opensource_mi424wr-rev-acd-56-0-10-14-4，代码行数:21，代码来源:igmp.c
示例18: ip_mc_leave_group
int ip_mc_leave_group(struct sock *sk, struct ip_mreqn *imr)
{
struct ip_mc_socklist *iml, **imlp;
for (imlp=&sk->ip_mc_list; (iml=*imlp)!=NULL; imlp=&iml->next) {
if (iml->multi.imr_multiaddr.s_addr==imr->imr_multiaddr.s_addr &&
iml->multi.imr_address.s_addr==imr->imr_address.s_addr &&
(!imr->imr_ifindex || iml->multi.imr_ifindex==imr->imr_ifindex)) {
struct in_device *in_dev;
if (--iml->count)
return 0;
*imlp = iml->next;
synchronize_bh();
in_dev = inetdev_by_index(iml->multi.imr_ifindex);
if (in_dev)
ip_mc_dec_group(in_dev, imr->imr_multiaddr.s_addr);
sock_kfree_s(sk, iml, sizeof(*iml));
return 0;
}
}
return -EADDRNOTAVAIL;
}
开发者ID:GNUHurdTR，项目名称:hurd，代码行数:24，代码来源:igmp.c
示例19: inet6_rsk
//.........这里部分代码省略.........
}
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)
goto out;
}
newsk = dccp_create_openreq_child(sk, req, skb);
if (newsk == NULL)
goto out;
/*
* No need to charge this sock to the relevant IPv6 refcnt debug socks
* count here, dccp_create_openreq_child now does this for us, see the
* comment in that function for the gory details. -acme
*/
__ip6_dst_store(newsk, dst, NULL, NULL);
newsk->sk_route_caps = dst->dev->features & ~(NETIF_F_IP_CSUM |
NETIF_F_TSO);
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));
ipv6_addr_copy(&newnp->daddr, &ireq6->rmt_addr);
ipv6_addr_copy(&newnp->saddr, &ireq6->loc_addr);
ipv6_addr_copy(&newnp->rcv_saddr, &ireq6->loc_addr);
newsk->sk_bound_dev_if = ireq6->iif;
/* Now IPv6 options...
First: no IPv4 options.
*/
newinet->opt = NULL;
/* Clone RX bits */
newnp->rxopt.all = np->rxopt.all;
/* Clone pktoptions received with SYN */
newnp->pktoptions = NULL;
if (ireq6->pktopts != NULL) {
newnp->pktoptions = skb_clone(ireq6->pktopts, GFP_ATOMIC);
kfree_skb(ireq6->pktopts);
ireq6->pktopts = NULL;
if (newnp->pktoptions)
skb_set_owner_r(newnp->pktoptions, newsk);
}
newnp->opt = NULL;
newnp->mcast_oif = inet6_iif(skb);
newnp->mcast_hops = ipv6_hdr(skb)->hop_limit;
/*
* Clone native IPv6 options from listening socket (if any)
*
* Yes, keeping reference count would be much more clever, but we make
* one more one thing there: reattach optmem to newsk.
*/
if (opt != NULL) {
newnp->opt = ipv6_dup_options(newsk, opt);
if (opt != np->opt)
sock_kfree_s(sk, opt, opt->tot_len);
}
inet_csk(newsk)->icsk_ext_hdr_len = 0;
if (newnp->opt != NULL)
inet_csk(newsk)->icsk_ext_hdr_len = (newnp->opt->opt_nflen +
newnp->opt->opt_flen);
dccp_sync_mss(newsk, dst_mtu(dst));
newinet->daddr = newinet->saddr = newinet->rcv_saddr = LOOPBACK4_IPV6;
__inet6_hash(newsk);
__inet_inherit_port(sk, newsk);
return newsk;
out_overflow:
NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_LISTENOVERFLOWS);
out:
NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_LISTENDROPS);
if (opt != NULL && opt != np->opt)
sock_kfree_s(sk, opt, opt->tot_len);
dst_release(dst);
return NULL;
}
开发者ID:AppEngine，项目名称:linux-2.6，代码行数:101，代码来源:ipv6.c
示例20: ipv6_setsockopt
int ipv6_setsockopt(struct sock *sk, int level, int optname,
char __user *optval, int optlen)
{
struct ipv6_pinfo *np = inet6_sk(sk);
int val, valbool;
int retv = -ENOPROTOOPT;
if (level == SOL_IP && sk->sk_type != SOCK_RAW)
return udp_prot.setsockopt(sk, level, optname, optval, optlen);
if(level!=SOL_IPV6)
goto out;
if (optval == NULL)
val=0;
else if (get_user(val, (int __user *) optval))
return -EFAULT;
valbool = (val!=0);
lock_sock(sk);
switch (optname) {
case IPV6_ADDRFORM:
if (val == PF_INET) {
struct ipv6_txoptions *opt;
struct sk_buff *pktopt;
if (sk->sk_protocol != IPPROTO_UDP &&
sk->sk_protocol != IPPROTO_TCP)
break;
if (sk->sk_state != TCP_ESTABLISHED) {
retv = -ENOTCONN;
break;
}
if (ipv6_only_sock(sk) ||
!(ipv6_addr_type(&np->daddr) & IPV6_ADDR_MAPPED)) {
retv = -EADDRNOTAVAIL;
break;
}
fl6_free_socklist(sk);
ipv6_sock_mc_close(sk);
if (sk->sk_protocol == IPPROTO_TCP) {
struct tcp_sock *tp = tcp_sk(sk);
local_bh_disable();
sock_prot_dec_use(sk->sk_prot);
sock_prot_inc_use(&tcp_prot);
local_bh_enable();
sk->sk_prot = &tcp_prot;
tp->af_specific = &ipv4_specific;
sk->sk_socket->ops = &inet_stream_ops;
sk->sk_family = PF_INET;
tcp_sync_mss(sk, tp->pmtu_cookie);
} else {
local_bh_disable();
sock_prot_dec_use(sk->sk_prot);
sock_prot_inc_use(&udp_prot);
local_bh_enable();
sk->sk_prot = &udp_prot;
sk->sk_socket->ops = &inet_dgram_ops;
sk->sk_family = PF_INET;
}
opt = xchg(&np->opt, NULL);
if (opt)
sock_kfree_s(sk, opt, opt->tot_len);
pktopt = xchg(&np->pktoptions, NULL);
if (pktopt)
kfree_skb(pktopt);
sk->sk_destruct = inet_sock_destruct;
#ifdef INET_REFCNT_DEBUG
atomic_dec(&inet6_sock_nr);
#endif
module_put(THIS_MODULE);
retv = 0;
break;
}
goto e_inval;
case IPV6_V6ONLY:
if (inet_sk(sk)->num)
goto e_inval;
np->ipv6only = valbool;
retv = 0;
break;
case IPV6_PKTINFO:
np->rxopt.bits.rxinfo = valbool;
retv = 0;
break;
case IPV6_HOPLIMIT:
np->rxopt.bits.rxhlim = valbool;
retv = 0;
//.........这里部分代码省略.........
开发者ID:OpenHMR，项目名称:Open-HMR600，代码行数:101，代码来源:ipv6_sockglue.c
注：本文中的sock_kfree_s函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。 |
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