lib-interface: Add parsing for interface 'options'
[samba.git] / source3 / lib / interface.c
index 69b104186500a94c42e367ec0c9c8748495d8441..b8450316b6730db65ddf61bd6edcf09ed8181cbf 100644 (file)
@@ -20,6 +20,8 @@
 
 #include "includes.h"
 #include "lib/socket/interfaces.h"
+#include "librpc/gen_ndr/ioctl.h"
+#include "lib/util/smb_strtox.h"
 
 static struct iface_struct *probed_ifaces;
 static int total_probed;
@@ -336,6 +338,7 @@ static void add_interface(const struct iface_struct *ifs)
        iface->linkspeed = ifs->linkspeed;
        iface->capability = ifs->capability;
        iface->if_index = ifs->if_index;
+       iface->options = ifs->options;
 
        DLIST_ADD(local_interfaces, iface);
 
@@ -350,6 +353,72 @@ static void add_interface(const struct iface_struct *ifs)
                        &iface->netmask) ));
 }
 
+
+static void parse_extra_info(char *key,
+                            uint64_t *speed,
+                            uint32_t *cap,
+                            uint32_t *if_index,
+                            uint32_t *options)
+{
+       while (key != NULL && *key != '\0') {
+               char *next_key;
+               char *val;
+               int error = 0;
+
+               next_key = strchr_m(key, ',');
+               if (next_key != NULL) {
+                       *next_key++ = 0;
+               }
+
+               val = strchr_m(key, '=');
+               if (val != NULL) {
+                       *val++ = 0;
+
+                       if (strequal_m(key, "speed")) {
+                               *speed = (uint64_t)smb_strtoull(val,
+                                                               NULL,
+                                                               0,
+                                                               &error,
+                                                               SMB_STR_STANDARD);
+                               if (error != 0) {
+                                       DBG_DEBUG("Invalid speed value (%s)\n", val);
+                               }
+                       } else if (strequal_m(key, "capability")) {
+                               if (strequal_m(val, "RSS")) {
+                                       *cap |= FSCTL_NET_IFACE_RSS_CAPABLE;
+                               } else if (strequal(val, "RDMA")) {
+                                       *cap |= FSCTL_NET_IFACE_RDMA_CAPABLE;
+                               } else {
+                                       DBG_WARNING("Capability unknown: "
+                                                   "'%s'\n", val);
+                               }
+                       } else if (strequal_m(key, "if_index")) {
+                               *if_index = (uint32_t)smb_strtoul(val,
+                                                                 NULL,
+                                                                 0,
+                                                                 &error,
+                                                                 SMB_STR_STANDARD);
+                               if (error != 0) {
+                                       DBG_DEBUG("Invalid key value (%s)\n", val);
+                               }
+                       } else if (strequal_m(key, "options")) {
+                               if (strequal_m(val, "dynamic")) {
+                                       *options |= IFACE_DYNAMIC_OPTION;
+                               } else if (strequal_m(val, "nodynamic")) {
+                                       *options &= ~IFACE_DYNAMIC_OPTION;
+                               } else {
+                                       DBG_WARNING("Options unknown: "
+                                                   "'%s'\n", val);
+                               }
+                       } else {
+                               DBG_DEBUG("Key unknown: '%s'\n", key);
+                       }
+               }
+
+               key = next_key;
+       }
+}
+
 /****************************************************************************
  Interpret a single element from a interfaces= config line.
 
@@ -360,6 +429,26 @@ static void add_interface(const struct iface_struct *ifs)
  3) IP/masklen
  4) ip/mask
  5) bcast/mask
+
+ Additional information for an interface can be specified with
+ this extended syntax:
+
+    "interface[;key1=value1[,key2=value2[...]]]"
+
+ Note: The double quoting is important for the
+       smb.conf parser! Otherwise the ';' and ',' separates
+       two interfaces.
+
+ where
+ - keys known: 'speed', 'capability', 'if_index'
+ - speed is in bits per second
+ - capabilities known: 'RSS', 'RDMA'
+ - if_index should be used with care, because
+   these indexes should not conicide with indexes
+   the kernel sets...
+
+ Note: The specified values overwrite the autodetected values!
+
 ****************************************************************************/
 
 static void interpret_interface(char *token)
@@ -373,10 +462,51 @@ static void interpret_interface(char *token)
        int i;
        bool added=false;
        bool goodaddr = false;
+       uint64_t speed = 0;
+       uint32_t cap = FSCTL_NET_IFACE_NONE_CAPABLE;
+       uint32_t if_index = 0;
+       bool speed_set = false;
+       bool cap_set = false;
+       bool if_index_set = false;
+       uint32_t options = IFACE_NONE_OPTION;
+       bool options_set = false;
+
+       /*
+        * extract speed / capability information if present
+        */
+       p = strchr_m(token, ';');
+       if (p != NULL) {
+               *p++ = 0;
+               parse_extra_info(p, &speed, &cap, &if_index, &options);
+               if (speed != 0) {
+                       speed_set = true;
+               }
+               if (cap != FSCTL_NET_IFACE_NONE_CAPABLE) {
+                       cap_set = true;
+               }
+               if (if_index != 0) {
+                       if_index_set = true;
+               }
+               if (options != IFACE_NONE_OPTION) {
+                       options_set = true;
+               }
+       }
 
        /* first check if it is an interface name */
        for (i=0;i<total_probed;i++) {
                if (gen_fnmatch(token, probed_ifaces[i].name) == 0) {
+                       if (speed_set) {
+                               probed_ifaces[i].linkspeed = speed;
+                       }
+                       if (cap_set) {
+                               probed_ifaces[i].capability = cap;
+                       }
+                       if (if_index_set) {
+                               probed_ifaces[i].if_index = if_index;
+                       }
+                       if (options_set) {
+                                probed_ifaces[i].options = options;
+                       }
                        add_interface(&probed_ifaces[i]);
                        added = true;
                }
@@ -397,6 +527,18 @@ static void interpret_interface(char *token)
                        if (sockaddr_equal((struct sockaddr *)&ss,
                                (struct sockaddr *)&probed_ifaces[i].ip))
                        {
+                               if (speed_set) {
+                                       probed_ifaces[i].linkspeed = speed;
+                               }
+                               if (cap_set) {
+                                       probed_ifaces[i].capability = cap;
+                               }
+                               if (if_index_set) {
+                                       probed_ifaces[i].if_index = if_index;
+                               }
+                               if (options_set) {
+                                       probed_ifaces[i].options = options;
+                               }
                                add_interface(&probed_ifaces[i]);
                                return;
                        }
@@ -428,9 +570,11 @@ static void interpret_interface(char *token)
                        return;
                }
        } else {
-               char *endp = NULL;
-               unsigned long val = strtoul(p, &endp, 0);
-               if (p == endp || (endp && *endp != '\0')) {
+               int error = 0;
+               unsigned long val;
+
+               val = smb_strtoul(p, NULL, 0, &error, SMB_STR_FULL_STR_CONV);
+               if (error != 0) {
                        DEBUG(2,("interpret_interface: "
                                "can't determine netmask value from %s\n",
                                p));
@@ -466,6 +610,18 @@ static void interpret_interface(char *token)
                                        "config file on interface %s\n",
                                        p,
                                        probed_ifaces[i].name));
+                               if (speed_set) {
+                                       probed_ifaces[i].linkspeed = speed;
+                               }
+                               if (cap_set) {
+                                       probed_ifaces[i].capability = cap;
+                               }
+                               if (if_index_set) {
+                                       probed_ifaces[i].if_index = if_index;
+                               }
+                               if (options_set) {
+                                       probed_ifaces[i].options = options;
+                               }
                                add_interface(&probed_ifaces[i]);
                                probed_ifaces[i].netmask = saved_mask;
                                return;
@@ -488,6 +644,16 @@ static void interpret_interface(char *token)
        ifs.ip = ss;
        ifs.netmask = ss_mask;
        ifs.bcast = ss_bcast;
+       if (if_index_set) {
+               ifs.if_index = if_index;
+       }
+       if (speed_set) {
+               ifs.linkspeed = speed;
+       } else {
+               ifs.linkspeed = 1000 * 1000 * 1000;
+       }
+       ifs.capability = cap;
+       ifs.options = options;
        add_interface(&ifs);
 }
 
@@ -581,3 +747,20 @@ bool interfaces_changed(void)
        TALLOC_FREE(ifaces);
        return ret;
 }
+
+/****************************************************************************
+ Return True if interface exists for given interface index
+**************************************************************************/
+
+bool interface_ifindex_exists(int if_index)
+{
+       struct interface *i;
+
+       for (i = local_interfaces; i != NULL; i = i->next) {
+               if (i->if_index == if_index) {
+                       return true;
+               }
+       }
+
+       return false;
+}