16 files changed, 192 insertions, 52 deletions

diff --git a/arch/powerpc/include/asm/systbl.h b/arch/powerpc/include/asm/systbl.h
index 60f64b132bd4..8489d372077f 100644
--- a/arch/powerpc/include/asm/systbl.h
+++ b/arch/powerpc/include/asm/systbl.h
@@ -352,3 +352,4 @@ SYSCALL_SPU(name_to_handle_at)
 COMPAT_SYS_SPU(open_by_handle_at)
 COMPAT_SYS_SPU(clock_adjtime)
 SYSCALL_SPU(syncfs)
+COMPAT_SYS_SPU(sendmmsg)
diff --git a/arch/powerpc/include/asm/unistd.h b/arch/powerpc/include/asm/unistd.h
index 3c215648ce6d..6d23c8193caa 100644
--- a/arch/powerpc/include/asm/unistd.h
+++ b/arch/powerpc/include/asm/unistd.h
@@ -371,10 +371,11 @@
 #define __NR_open_by_handle_at  346
 #define __NR_clock_adjtime      347
 #define __NR_syncfs             348
+#define __NR_sendmmsg           349
 
 #ifdef __KERNEL__
 
-#define __NR_syscalls           349
+#define __NR_syscalls           350
 
 #define __NR__exit __NR_exit
 #define NR_syscalls     __NR_syscalls
diff --git a/arch/sparc/include/asm/unistd.h b/arch/sparc/include/asm/unistd.h
index 9d897b6db983..c5387ed0add8 100644
--- a/arch/sparc/include/asm/unistd.h
+++ b/arch/sparc/include/asm/unistd.h
@@ -404,8 +404,9 @@
 #define __NR_open_by_handle_at  333
 #define __NR_clock_adjtime      334
 #define __NR_syncfs             335
+#define __NR_sendmmsg           336
 
-#define NR_syscalls             336
+#define NR_syscalls             337
 
 #ifdef __32bit_syscall_numbers__
 /* Sparc 32-bit only has the "setresuid32", "getresuid32" variants,
diff --git a/arch/sparc/kernel/systbls_32.S b/arch/sparc/kernel/systbls_32.S
index 47ac73c32e88..332c83ff7701 100644
--- a/arch/sparc/kernel/systbls_32.S
+++ b/arch/sparc/kernel/systbls_32.S
@@ -84,4 +84,4 @@ sys_call_table:
 /*320*/ .long sys_dup3, sys_pipe2, sys_inotify_init1, sys_accept4, sys_preadv
 /*325*/ .long sys_pwritev, sys_rt_tgsigqueueinfo, sys_perf_event_open, sys_recvmmsg, sys_fanotify_init
 /*330*/ .long sys_fanotify_mark, sys_prlimit64, sys_name_to_handle_at, sys_open_by_handle_at, sys_clock_adjtime
-/*335*/ .long sys_syncfs
+/*335*/ .long sys_syncfs, sys_sendmmsg
diff --git a/arch/sparc/kernel/systbls_64.S b/arch/sparc/kernel/systbls_64.S
index 4f3170c1ef47..43887ca0be0e 100644
--- a/arch/sparc/kernel/systbls_64.S
+++ b/arch/sparc/kernel/systbls_64.S
@@ -85,7 +85,7 @@ sys_call_table32:
 /*320*/ .word sys_dup3, sys_pipe2, sys_inotify_init1, sys_accept4, compat_sys_preadv
         .word compat_sys_pwritev, compat_sys_rt_tgsigqueueinfo, sys_perf_event_open, compat_sys_recvmmsg, sys_fanotify_init
 /*330*/ .word sys32_fanotify_mark, sys_prlimit64, sys_name_to_handle_at, compat_sys_open_by_handle_at, compat_sys_clock_adjtime
-        .word sys_syncfs
+        .word sys_syncfs, compat_sys_sendmmsg
 
 #endif /* CONFIG_COMPAT */
 
@@ -162,4 +162,4 @@ sys_call_table:
 /*320*/ .word sys_dup3, sys_pipe2, sys_inotify_init1, sys_accept4, sys_preadv
         .word sys_pwritev, sys_rt_tgsigqueueinfo, sys_perf_event_open, sys_recvmmsg, sys_fanotify_init
 /*330*/ .word sys_fanotify_mark, sys_prlimit64, sys_name_to_handle_at, sys_open_by_handle_at, sys_clock_adjtime
-        .word sys_syncfs
+        .word sys_syncfs, sys_sendmmsg
diff --git a/arch/x86/ia32/ia32entry.S b/arch/x86/ia32/ia32entry.S
index 849a9d23c71d..95f5826be458 100644
--- a/arch/x86/ia32/ia32entry.S
+++ b/arch/x86/ia32/ia32entry.S
@@ -848,4 +848,5 @@ ia32_sys_call_table:
         .quad compat_sys_open_by_handle_at
         .quad compat_sys_clock_adjtime
         .quad sys_syncfs
+        .quad compat_sys_sendmmsg       /* 345 */
 ia32_syscall_end:
diff --git a/arch/x86/include/asm/unistd_32.h b/arch/x86/include/asm/unistd_32.h
index a755ef5e5977..fb6a625c99bf 100644
--- a/arch/x86/include/asm/unistd_32.h
+++ b/arch/x86/include/asm/unistd_32.h
@@ -350,10 +350,11 @@
 #define __NR_open_by_handle_at  342
 #define __NR_clock_adjtime      343
 #define __NR_syncfs             344
+#define __NR_sendmmsg           345
 
 #ifdef __KERNEL__
 
-#define NR_syscalls 345
+#define NR_syscalls 346
 
 #define __ARCH_WANT_IPC_PARSE_VERSION
 #define __ARCH_WANT_OLD_READDIR
diff --git a/arch/x86/include/asm/unistd_64.h b/arch/x86/include/asm/unistd_64.h
index 160fa76bd578..79f90eb15aad 100644
--- a/arch/x86/include/asm/unistd_64.h
+++ b/arch/x86/include/asm/unistd_64.h
@@ -677,6 +677,8 @@ __SYSCALL(__NR_open_by_handle_at, sys_open_by_handle_at)
 __SYSCALL(__NR_clock_adjtime, sys_clock_adjtime)
 #define __NR_syncfs                             306
 __SYSCALL(__NR_syncfs, sys_syncfs)
+#define __NR_sendmmsg                           307
+__SYSCALL(__NR_sendmmsg, sys_sendmmsg)
 
 #ifndef __NO_STUBS
 #define __ARCH_WANT_OLD_READDIR
diff --git a/arch/x86/kernel/syscall_table_32.S b/arch/x86/kernel/syscall_table_32.S
index abce34d5c79d..32cbffb0c494 100644
--- a/arch/x86/kernel/syscall_table_32.S
+++ b/arch/x86/kernel/syscall_table_32.S
@@ -344,3 +344,4 @@ ENTRY(sys_call_table)
         .long sys_open_by_handle_at
         .long sys_clock_adjtime
         .long sys_syncfs
+        .long sys_sendmmsg              /* 345 */
diff --git a/include/linux/net.h b/include/linux/net.h
index 94de83c0f877..1da55e9b6f01 100644
--- a/include/linux/net.h
+++ b/include/linux/net.h
@@ -42,6 +42,7 @@
 #define SYS_RECVMSG     17              /* sys_recvmsg(2)               */
 #define SYS_ACCEPT4     18              /* sys_accept4(2)               */
 #define SYS_RECVMMSG    19              /* sys_recvmmsg(2)              */
+#define SYS_SENDMMSG    20              /* sys_sendmmsg(2)              */
 
 typedef enum {
         SS_FREE = 0,                    /* not allocated                */
diff --git a/include/linux/socket.h b/include/linux/socket.h
index d2b5e982f079..4ef98e422fde 100644
--- a/include/linux/socket.h
+++ b/include/linux/socket.h
@@ -333,5 +333,7 @@ struct timespec;
 
 extern int __sys_recvmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen,
                           unsigned int flags, struct timespec *timeout);
+extern int __sys_sendmmsg(int fd, struct mmsghdr __user *mmsg,
+                          unsigned int vlen, unsigned int flags);
 #endif /* not kernel and not glibc */
 #endif /* _LINUX_SOCKET_H */
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index 83ecc1749ef6..ab71447d0c5a 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -610,6 +610,8 @@ asmlinkage long sys_send(int, void __user *, size_t, unsigned);
 asmlinkage long sys_sendto(int, void __user *, size_t, unsigned,
                                 struct sockaddr __user *, int);
 asmlinkage long sys_sendmsg(int fd, struct msghdr __user *msg, unsigned flags);
+asmlinkage long sys_sendmmsg(int fd, struct mmsghdr __user *msg,
+                             unsigned int vlen, unsigned flags);
 asmlinkage long sys_recv(int, void __user *, size_t, unsigned);
 asmlinkage long sys_recvfrom(int, void __user *, size_t, unsigned,
                                 struct sockaddr __user *, int __user *);
diff --git a/include/net/compat.h b/include/net/compat.h
index 28d5428ec6a2..9ee75edcc295 100644
--- a/include/net/compat.h
+++ b/include/net/compat.h
@@ -43,6 +43,8 @@ extern int compat_sock_get_timestampns(struct sock *, struct timespec __user *);
 extern int get_compat_msghdr(struct msghdr *, struct compat_msghdr __user *);
 extern int verify_compat_iovec(struct msghdr *, struct iovec *, struct sockaddr *, int);
 extern asmlinkage long compat_sys_sendmsg(int,struct compat_msghdr __user *,unsigned);
+extern asmlinkage long compat_sys_sendmmsg(int, struct compat_mmsghdr __user *,
+                                           unsigned, unsigned);
 extern asmlinkage long compat_sys_recvmsg(int,struct compat_msghdr __user *,unsigned);
 extern asmlinkage long compat_sys_recvmmsg(int, struct compat_mmsghdr __user *,
                                            unsigned, unsigned,
diff --git a/kernel/sys_ni.c b/kernel/sys_ni.c
index 25cc41cd8f33..97e966f171c6 100644
--- a/kernel/sys_ni.c
+++ b/kernel/sys_ni.c
@@ -46,7 +46,9 @@ cond_syscall(sys_getsockopt);
 cond_syscall(compat_sys_getsockopt);
 cond_syscall(sys_shutdown);
 cond_syscall(sys_sendmsg);
+cond_syscall(sys_sendmmsg);
 cond_syscall(compat_sys_sendmsg);
+cond_syscall(compat_sys_sendmmsg);
 cond_syscall(sys_recvmsg);
 cond_syscall(sys_recvmmsg);
 cond_syscall(compat_sys_recvmsg);
diff --git a/net/compat.c b/net/compat.c
index 3649d5895361..c578d9382e19 100644
--- a/net/compat.c
+++ b/net/compat.c
@@ -722,11 +722,11 @@ EXPORT_SYMBOL(compat_mc_getsockopt);
 
 /* Argument list sizes for compat_sys_socketcall */
 #define AL(x) ((x) * sizeof(u32))
-static unsigned char nas[20] = {
+static unsigned char nas[21] = {
         AL(0), AL(3), AL(3), AL(3), AL(2), AL(3),
         AL(3), AL(3), AL(4), AL(4), AL(4), AL(6),
         AL(6), AL(2), AL(5), AL(5), AL(3), AL(3),
-        AL(4), AL(5)
+        AL(4), AL(5), AL(4)
 };
 #undef AL
 
@@ -735,6 +735,13 @@ asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg, uns
         return sys_sendmsg(fd, (struct msghdr __user *)msg, flags | MSG_CMSG_COMPAT);
 }
 
+asmlinkage long compat_sys_sendmmsg(int fd, struct compat_mmsghdr __user *mmsg,
+                                    unsigned vlen, unsigned int flags)
+{
+        return __sys_sendmmsg(fd, (struct mmsghdr __user *)mmsg, vlen,
+                              flags | MSG_CMSG_COMPAT);
+}
+
 asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg, unsigned int flags)
 {
         return sys_recvmsg(fd, (struct msghdr __user *)msg, flags | MSG_CMSG_COMPAT);
@@ -780,7 +787,7 @@ asmlinkage long compat_sys_socketcall(int call, u32 __user *args)
         u32 a[6];
         u32 a0, a1;
 
-        if (call < SYS_SOCKET || call > SYS_RECVMMSG)
+        if (call < SYS_SOCKET || call > SYS_SENDMMSG)
                 return -EINVAL;
         if (copy_from_user(a, args, nas[call]))
                 return -EFAULT;
@@ -839,6 +846,9 @@ asmlinkage long compat_sys_socketcall(int call, u32 __user *args)
         case SYS_SENDMSG:
                 ret = compat_sys_sendmsg(a0, compat_ptr(a1), a[2]);
                 break;
+        case SYS_SENDMMSG:
+                ret = compat_sys_sendmmsg(a0, compat_ptr(a1), a[2], a[3]);
+                break;
         case SYS_RECVMSG:
                 ret = compat_sys_recvmsg(a0, compat_ptr(a1), a[2]);
                 break;
diff --git a/net/socket.c b/net/socket.c
index d25f5a9d6fa2..ed50255143d5 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -551,11 +551,10 @@ int sock_tx_timestamp(struct sock *sk, __u8 *tx_flags)
 }
 EXPORT_SYMBOL(sock_tx_timestamp);
 
-static inline int __sock_sendmsg(struct kiocb *iocb, struct socket *sock,
-                                 struct msghdr *msg, size_t size)
+static inline int __sock_sendmsg_nosec(struct kiocb *iocb, struct socket *sock,
+                                       struct msghdr *msg, size_t size)
 {
         struct sock_iocb *si = kiocb_to_siocb(iocb);
-        int err;
 
         sock_update_classid(sock->sk);
 
@@ -564,13 +563,17 @@ static inline int __sock_sendmsg(struct kiocb *iocb, struct socket *sock,
         si->msg = msg;
         si->size = size;
 
-        err = security_socket_sendmsg(sock, msg, size);
-        if (err)
-                return err;
-
         return sock->ops->sendmsg(iocb, sock, msg, size);
 }
 
+static inline int __sock_sendmsg(struct kiocb *iocb, struct socket *sock,
+                                 struct msghdr *msg, size_t size)
+{
+        int err = security_socket_sendmsg(sock, msg, size);
+
+        return err ?: __sock_sendmsg_nosec(iocb, sock, msg, size);
+}
+
 int sock_sendmsg(struct socket *sock, struct msghdr *msg, size_t size)
 {
         struct kiocb iocb;
@@ -586,6 +589,20 @@ int sock_sendmsg(struct socket *sock, struct msghdr *msg, size_t size)
 }
 EXPORT_SYMBOL(sock_sendmsg);
 
+int sock_sendmsg_nosec(struct socket *sock, struct msghdr *msg, size_t size)
+{
+        struct kiocb iocb;
+        struct sock_iocb siocb;
+        int ret;
+
+        init_sync_kiocb(&iocb, NULL);
+        iocb.private = &siocb;
+        ret = __sock_sendmsg_nosec(&iocb, sock, msg, size);
+        if (-EIOCBQUEUED == ret)
+                ret = wait_on_sync_kiocb(&iocb);
+        return ret;
+}
+
 int kernel_sendmsg(struct socket *sock, struct msghdr *msg,
                    struct kvec *vec, size_t num, size_t size)
 {
@@ -1863,57 +1880,47 @@ SYSCALL_DEFINE2(shutdown, int, fd, int, how)
 #define COMPAT_NAMELEN(msg)     COMPAT_MSG(msg, msg_namelen)
 #define COMPAT_FLAGS(msg)       COMPAT_MSG(msg, msg_flags)
 
-/*
- *      BSD sendmsg interface
- */
-
-SYSCALL_DEFINE3(sendmsg, int, fd, struct msghdr __user *, msg, unsigned, flags)
+static int __sys_sendmsg(struct socket *sock, struct msghdr __user *msg,
+                         struct msghdr *msg_sys, unsigned flags, int nosec)
 {
         struct compat_msghdr __user *msg_compat =
             (struct compat_msghdr __user *)msg;
-        struct socket *sock;
         struct sockaddr_storage address;
         struct iovec iovstack[UIO_FASTIOV], *iov = iovstack;
         unsigned char ctl[sizeof(struct cmsghdr) + 20]
             __attribute__ ((aligned(sizeof(__kernel_size_t))));
         /* 20 is size of ipv6_pktinfo */
         unsigned char *ctl_buf = ctl;
-        struct msghdr msg_sys;
         int err, ctl_len, iov_size, total_len;
-        int fput_needed;
 
         err = -EFAULT;
         if (MSG_CMSG_COMPAT & flags) {
-                if (get_compat_msghdr(&msg_sys, msg_compat))
+                if (get_compat_msghdr(msg_sys, msg_compat))
                         return -EFAULT;
-        } else if (copy_from_user(&msg_sys, msg, sizeof(struct msghdr)))
+        } else if (copy_from_user(msg_sys, msg, sizeof(struct msghdr)))
                 return -EFAULT;
 
-        sock = sockfd_lookup_light(fd, &err, &fput_needed);
-        if (!sock)
-                goto out;
-
         /* do not move before msg_sys is valid */
         err = -EMSGSIZE;
-        if (msg_sys.msg_iovlen > UIO_MAXIOV)
-                goto out_put;
+        if (msg_sys->msg_iovlen > UIO_MAXIOV)
+                goto out;
 
         /* Check whether to allocate the iovec area */
         err = -ENOMEM;
-        iov_size = msg_sys.msg_iovlen * sizeof(struct iovec);
-        if (msg_sys.msg_iovlen > UIO_FASTIOV) {
+        iov_size = msg_sys->msg_iovlen * sizeof(struct iovec);
+        if (msg_sys->msg_iovlen > UIO_FASTIOV) {
                 iov = sock_kmalloc(sock->sk, iov_size, GFP_KERNEL);
                 if (!iov)
-                        goto out_put;
+                        goto out;
         }
 
         /* This will also move the address data into kernel space */
         if (MSG_CMSG_COMPAT & flags) {
-                err = verify_compat_iovec(&msg_sys, iov,
+                err = verify_compat_iovec(msg_sys, iov,
                                           (struct sockaddr *)&address,
                                           VERIFY_READ);
         } else
-                err = verify_iovec(&msg_sys, iov,
+                err = verify_iovec(msg_sys, iov,
                                    (struct sockaddr *)&address,
                                    VERIFY_READ);
         if (err < 0)
@@ -1922,17 +1929,17 @@ SYSCALL_DEFINE3(sendmsg, int, fd, struct msghdr __user *, msg, unsigned, flags)
 
         err = -ENOBUFS;
 
-        if (msg_sys.msg_controllen > INT_MAX)
+        if (msg_sys->msg_controllen > INT_MAX)
                 goto out_freeiov;
-        ctl_len = msg_sys.msg_controllen;
+        ctl_len = msg_sys->msg_controllen;
         if ((MSG_CMSG_COMPAT & flags) && ctl_len) {
                 err =
-                    cmsghdr_from_user_compat_to_kern(&msg_sys, sock->sk, ctl,
+                    cmsghdr_from_user_compat_to_kern(msg_sys, sock->sk, ctl,
                                                      sizeof(ctl));
                 if (err)
                         goto out_freeiov;
-                ctl_buf = msg_sys.msg_control;
-                ctl_len = msg_sys.msg_controllen;
+                ctl_buf = msg_sys->msg_control;
+                ctl_len = msg_sys->msg_controllen;
         } else if (ctl_len) {
                 if (ctl_len > sizeof(ctl)) {
                         ctl_buf = sock_kmalloc(sock->sk, ctl_len, GFP_KERNEL);
@@ -1941,21 +1948,22 @@ SYSCALL_DEFINE3(sendmsg, int, fd, struct msghdr __user *, msg, unsigned, flags)
                 }
                 err = -EFAULT;
                 /*
-                 * Careful! Before this, msg_sys.msg_control contains a user pointer.
+                 * Careful! Before this, msg_sys->msg_control contains a user pointer.
                  * Afterwards, it will be a kernel pointer. Thus the compiler-assisted
                  * checking falls down on this.
                  */
                 if (copy_from_user(ctl_buf,
-                                   (void __user __force *)msg_sys.msg_control,
+                                   (void __user __force *)msg_sys->msg_control,
                                    ctl_len))
                         goto out_freectl;
-                msg_sys.msg_control = ctl_buf;
+                msg_sys->msg_control = ctl_buf;
         }
-        msg_sys.msg_flags = flags;
+        msg_sys->msg_flags = flags;
 
         if (sock->file->f_flags & O_NONBLOCK)
-                msg_sys.msg_flags |= MSG_DONTWAIT;
-        err = sock_sendmsg(sock, &msg_sys, total_len);
+                msg_sys->msg_flags |= MSG_DONTWAIT;
+        err = (nosec ? sock_sendmsg_nosec : sock_sendmsg)(sock, msg_sys,
+                                                          total_len);
 
 out_freectl:
         if (ctl_buf != ctl)
@@ -1963,12 +1971,114 @@ out_freectl:
 out_freeiov:
         if (iov != iovstack)
                 sock_kfree_s(sock->sk, iov, iov_size);
-out_put:
+out:
+        return err;
+}
+
+/*
+ *      BSD sendmsg interface
+ */
+
+SYSCALL_DEFINE3(sendmsg, int, fd, struct msghdr __user *, msg, unsigned, flags)
+{
+        int fput_needed, err;
+        struct msghdr msg_sys;
+        struct socket *sock = sockfd_lookup_light(fd, &err, &fput_needed);
+
+        if (!sock)
+                goto out;
+
+        err = __sys_sendmsg(sock, msg, &msg_sys, flags, 0);
+
         fput_light(sock->file, fput_needed);
 out:
         return err;
 }
 
+/*
+ *      Linux sendmmsg interface
+ */
+
+int __sys_sendmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen,
+                   unsigned int flags)
+{
+        int fput_needed, err, datagrams;
+        struct socket *sock;
+        struct mmsghdr __user *entry;
+        struct compat_mmsghdr __user *compat_entry;
+        struct msghdr msg_sys;
+
+        datagrams = 0;
+
+        sock = sockfd_lookup_light(fd, &err, &fput_needed);
+        if (!sock)
+                return err;
+
+        err = sock_error(sock->sk);
+        if (err)
+                goto out_put;
+
+        entry = mmsg;
+        compat_entry = (struct compat_mmsghdr __user *)mmsg;
+
+        while (datagrams < vlen) {
+                /*
+                 * No need to ask LSM for more than the first datagram.
+                 */
+                if (MSG_CMSG_COMPAT & flags) {
+                        err = __sys_sendmsg(sock, (struct msghdr __user *)compat_entry,
+                                            &msg_sys, flags, datagrams);
+                        if (err < 0)
+                                break;
+                        err = __put_user(err, &compat_entry->msg_len);
+                        ++compat_entry;
+                } else {
+                        err = __sys_sendmsg(sock, (struct msghdr __user *)entry,
+                                            &msg_sys, flags, datagrams);
+                        if (err < 0)
+                                break;
+                        err = put_user(err, &entry->msg_len);
+                        ++entry;
+                }
+
+                if (err)
+                        break;
+                ++datagrams;
+        }
+
+out_put:
+        fput_light(sock->file, fput_needed);
+
+        if (err == 0)
+                return datagrams;
+
+        if (datagrams != 0) {
+                /*
+                 * We may send less entries than requested (vlen) if the
+                 * sock is non blocking...
+                 */
+                if (err != -EAGAIN) {
+                        /*
+                         * ... or if sendmsg returns an error after we
+                         * send some datagrams, where we record the
+                         * error to return on the next call or if the
+                         * app asks about it using getsockopt(SO_ERROR).
+                         */
+                        sock->sk->sk_err = -err;
+                }
+
+                return datagrams;
+        }
+
+        return err;
+}
+
+SYSCALL_DEFINE4(sendmmsg, int, fd, struct mmsghdr __user *, mmsg,
+                unsigned int, vlen, unsigned int, flags)
+{
+        return __sys_sendmmsg(fd, mmsg, vlen, flags);
+}
+
 static int __sys_recvmsg(struct socket *sock, struct msghdr __user *msg,
                          struct msghdr *msg_sys, unsigned flags, int nosec)
 {
@@ -2214,11 +2324,11 @@ SYSCALL_DEFINE5(recvmmsg, int, fd, struct mmsghdr __user *, mmsg,
 #ifdef __ARCH_WANT_SYS_SOCKETCALL
 /* Argument list sizes for sys_socketcall */
 #define AL(x) ((x) * sizeof(unsigned long))
-static const unsigned char nargs[20] = {
+static const unsigned char nargs[21] = {
         AL(0), AL(3), AL(3), AL(3), AL(2), AL(3),
         AL(3), AL(3), AL(4), AL(4), AL(4), AL(6),
         AL(6), AL(2), AL(5), AL(5), AL(3), AL(3),
-        AL(4), AL(5)
+        AL(4), AL(5), AL(4)
 };
 
 #undef AL
@@ -2238,7 +2348,7 @@ SYSCALL_DEFINE2(socketcall, int, call, unsigned long __user *, args)
         int err;
         unsigned int len;
 
-        if (call < 1 || call > SYS_RECVMMSG)
+        if (call < 1 || call > SYS_SENDMMSG)
                 return -EINVAL;
 
         len = nargs[call];
@@ -2313,6 +2423,9 @@ SYSCALL_DEFINE2(socketcall, int, call, unsigned long __user *, args)
         case SYS_SENDMSG:
                 err = sys_sendmsg(a0, (struct msghdr __user *)a1, a[2]);
                 break;
+        case SYS_SENDMMSG:
+                err = sys_sendmmsg(a0, (struct mmsghdr __user *)a1, a[2], a[3]);
+                break;
         case SYS_RECVMSG:
                 err = sys_recvmsg(a0, (struct msghdr __user *)a1, a[2]);
                 break;