Linux kernel compatability enhancements (through 3.19)

[palacios.git] / linux_module / iface-socket.c

diff --git a/linux_module/iface-socket.c b/linux_module/iface-socket.c
index 979558c..3f85682 100644 (file)
--- a/linux_module/iface-socket.c
+++ b/linux_module/iface-socket.c
@@ -51,19 +51,26 @@ palacios_tcp_socket(const int bufsize, const int nodelay,
         vm_state = get_vm_ext_data(guest, "SOCKET_INTERFACE");
         
         if (vm_state == NULL) {
-            printk("ERROR: Could not locate vm socket state for extension SOCKET_INTERFACE\n");
+            ERROR("ERROR: Could not locate vm socket state for extension SOCKET_INTERFACE\n");
             return NULL;
         }
     }
 
 
-    sock = kmalloc(sizeof(struct palacios_socket), GFP_KERNEL);
+    sock = palacios_alloc(sizeof(struct palacios_socket));
+    
+    if (!sock) { 
+       ERROR("Cannot allocate TCP socket\n");
+       return NULL;
+    }
+
     memset(sock, 0, sizeof(struct palacios_socket));
 
     err = sock_create(PF_INET, SOCK_STREAM, IPPROTO_TCP, &(sock->sock));
 
     if (err < 0) {
-       kfree(sock);
+       ERROR("Cannot create TCP socket\n");
+       palacios_free(sock);
        return NULL;
     }
        
@@ -95,19 +102,25 @@ palacios_udp_socket(
         vm_state = get_vm_ext_data(guest, "SOCKET_INTERFACE");
         
         if (vm_state == NULL) {
-            printk("ERROR: Could not locate vm socket state for extension SOCKET_INTERFACE\n");
+            ERROR("ERROR: Could not locate vm socket state for extension SOCKET_INTERFACE\n");
             return NULL;
         }
     }
 
 
-    sock = kmalloc(sizeof(struct palacios_socket), GFP_KERNEL);
+    sock = palacios_alloc(sizeof(struct palacios_socket));
+    if (!sock) { 
+       ERROR("Cannot allocate UDP socket\n");
+       return NULL;
+    }
+
     memset(sock, 0, sizeof(struct palacios_socket));
 
     err = sock_create(AF_INET, SOCK_DGRAM, IPPROTO_UDP, &(sock->sock)) ;
        
     if (err < 0){
-       kfree(sock);
+       ERROR("Cannot create UDP socket\n");
+       palacios_free(sock);
        return NULL;
     }
     
@@ -133,7 +146,7 @@ palacios_close(void * sock_ptr)
        sock->sock->ops->release(sock->sock);
        
        list_del(&(sock->sock_node));
-       kfree(sock);
+       palacios_free(sock);
     }
 }
 
@@ -187,18 +200,24 @@ static void * palacios_accept(const void * sock_ptr, unsigned int * remote_ip, u
         vm_state = get_vm_ext_data(sock->guest, "SOCKET_INTERFACE");
         
         if (vm_state == NULL) {
-            printk("ERROR: Could not locate vm socket state for extension SOCKET_INTERFACE\n");
+            ERROR("Could not locate vm socket state for extension SOCKET_INTERFACE\n");
             return NULL;
         }
     }
 
 
-    newsock = kmalloc(sizeof(struct palacios_socket), GFP_KERNEL);
+    newsock = palacios_alloc(sizeof(struct palacios_socket));
+
+    if (!newsock) { 
+       ERROR("Cannot allocate new socket on accept\n");
+       return NULL;
+    }
 
     err = sock_create(PF_INET, SOCK_STREAM, IPPROTO_TCP, &(newsock->sock));
 
     if (err < 0) {
-       kfree(newsock);
+       ERROR("Cannot create new socket on accept\n");
+       palacios_free(newsock);
        return NULL;
     }
 
@@ -208,7 +227,8 @@ static void * palacios_accept(const void * sock_ptr, unsigned int * remote_ip, u
     err = newsock->sock->ops->accept(sock->sock, newsock->sock, 0);
 
     if (err < 0){
-       kfree(newsock);
+       ERROR("Cannot accept\n");
+       palacios_free(newsock);
        return NULL;
     }
 
@@ -281,8 +301,12 @@ palacios_send(
        msg.msg_namelen = 0;
        msg.msg_control = NULL;
        msg.msg_controllen = 0;
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3,19,0)
        msg.msg_iov = &iov;
        msg.msg_iovlen = 1;
+#else
+       iov_iter_init(&(msg.msg_iter),WRITE,&iov,1,0);
+#endif
 
        iov.iov_base = (char *)buf;
        iov.iov_len = (size_t)len;
@@ -320,8 +344,12 @@ palacios_recv(
        msg.msg_namelen = 0;
        msg.msg_control = NULL;
        msg.msg_controllen = 0;
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3,19,0)
        msg.msg_iov = &iov;
        msg.msg_iovlen = 1;
+#else
+       iov_iter_init(&(msg.msg_iter),READ,&iov,1,0);
+#endif
 
        iov.iov_base = (void *)&buf[0];
        iov.iov_len = (size_t)len;
@@ -365,8 +393,12 @@ palacios_sendto_ip(
        msg.msg_namelen = sizeof(struct sockaddr_in);
        msg.msg_control = NULL;
        msg.msg_controllen = 0;
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3,19,0)
        msg.msg_iov = &iov;
        msg.msg_iovlen = 1;
+#else
+       iov_iter_init(&(msg.msg_iter),WRITE,&iov,1,0);
+#endif
 
        iov.iov_base = (char *)buf;
        iov.iov_len = (size_t)len;
@@ -394,7 +426,6 @@ palacios_recvfrom_ip(
 {
        struct palacios_socket * sock = (struct palacios_socket *)sock_ptr;
        struct sockaddr_in src;
-       int alen;
        struct msghdr msg;
        mm_segment_t oldfs;
        struct iovec iov;
@@ -407,7 +438,6 @@ palacios_recvfrom_ip(
        src.sin_family = AF_INET;
        src.sin_port = htons(port);
        src.sin_addr.s_addr = htonl(ip_addr);
-       alen = sizeof(src);
 
 
        msg.msg_flags = 0;
@@ -415,8 +445,12 @@ palacios_recvfrom_ip(
        msg.msg_namelen = sizeof(struct sockaddr_in);
        msg.msg_control = NULL;
        msg.msg_controllen = 0;
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3,19,0)
        msg.msg_iov = &iov;
        msg.msg_iovlen = 1;
+#else
+       iov_iter_init(&(msg.msg_iter),READ,&iov,1,0);
+#endif
 
        iov.iov_base = (void *)&buf[0];
        iov.iov_len = (size_t)len;
@@ -457,7 +491,7 @@ static int socket_init( void ) {
 
 static int socket_deinit( void ) {
     if (!list_empty(&(global_sockets))) {
-       printk("Error removing module with open sockets\n");
+       ERROR("Error removing module with open sockets\n");
     }
 
     return 0;