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Diffstat (limited to 'fs/afs/vlclient.c')
-rw-r--r--fs/afs/vlclient.c337
1 files changed, 336 insertions, 1 deletions
diff --git a/fs/afs/vlclient.c b/fs/afs/vlclient.c
index 173c652fe875..1d38cbdf6cad 100644
--- a/fs/afs/vlclient.c
+++ b/fs/afs/vlclient.c
@@ -225,7 +225,7 @@ again:
bp = call->buffer;
for (i = 0; i < count; i++)
if (alist->nr_addrs < call->count2)
- afs_merge_fs_addr4(alist, *bp++);
+ afs_merge_fs_addr4(alist, *bp++, AFS_FS_PORT);
call->count -= count;
if (call->count > 0)
@@ -300,3 +300,338 @@ struct afs_addr_list *afs_vl_get_addrs_u(struct afs_net *net,
return (struct afs_addr_list *)afs_make_call(ac, call, GFP_KERNEL, false);
}
+
+/*
+ * Deliver reply data to an VL.GetCapabilities operation.
+ */
+static int afs_deliver_vl_get_capabilities(struct afs_call *call)
+{
+ u32 count;
+ int ret;
+
+ _enter("{%u,%zu/%u}", call->unmarshall, call->offset, call->count);
+
+again:
+ switch (call->unmarshall) {
+ case 0:
+ call->offset = 0;
+ call->unmarshall++;
+
+ /* Extract the capabilities word count */
+ case 1:
+ ret = afs_extract_data(call, &call->tmp,
+ 1 * sizeof(__be32),
+ true);
+ if (ret < 0)
+ return ret;
+
+ count = ntohl(call->tmp);
+
+ call->count = count;
+ call->count2 = count;
+ call->offset = 0;
+ call->unmarshall++;
+
+ /* Extract capabilities words */
+ case 2:
+ count = min(call->count, 16U);
+ ret = afs_extract_data(call, call->buffer,
+ count * sizeof(__be32),
+ call->count > 16);
+ if (ret < 0)
+ return ret;
+
+ /* TODO: Examine capabilities */
+
+ call->count -= count;
+ if (call->count > 0)
+ goto again;
+ call->offset = 0;
+ call->unmarshall++;
+ break;
+ }
+
+ call->reply[0] = (void *)(unsigned long)call->service_id;
+
+ _leave(" = 0 [done]");
+ return 0;
+}
+
+/*
+ * VL.GetCapabilities operation type
+ */
+static const struct afs_call_type afs_RXVLGetCapabilities = {
+ .name = "VL.GetCapabilities",
+ .deliver = afs_deliver_vl_get_capabilities,
+ .destructor = afs_flat_call_destructor,
+};
+
+/*
+ * Probe a fileserver for the capabilities that it supports. This can
+ * return up to 196 words.
+ *
+ * We use this to probe for service upgrade to determine what the server at the
+ * other end supports.
+ */
+int afs_vl_get_capabilities(struct afs_net *net,
+ struct afs_addr_cursor *ac,
+ struct key *key)
+{
+ struct afs_call *call;
+ __be32 *bp;
+
+ _enter("");
+
+ call = afs_alloc_flat_call(net, &afs_RXVLGetCapabilities, 1 * 4, 16 * 4);
+ if (!call)
+ return -ENOMEM;
+
+ call->key = key;
+ call->upgrade = true; /* Let's see if this is a YFS server */
+ call->reply[0] = (void *)VLGETCAPABILITIES;
+ call->ret_reply0 = true;
+
+ /* marshall the parameters */
+ bp = call->request;
+ *bp++ = htonl(VLGETCAPABILITIES);
+
+ /* Can't take a ref on server */
+ return afs_make_call(ac, call, GFP_KERNEL, false);
+}
+
+/*
+ * Deliver reply data to a YFSVL.GetEndpoints call.
+ *
+ * GetEndpoints(IN yfsServerAttributes *attr,
+ * OUT opr_uuid *uuid,
+ * OUT afs_int32 *uniquifier,
+ * OUT endpoints *fsEndpoints,
+ * OUT endpoints *volEndpoints)
+ */
+static int afs_deliver_yfsvl_get_endpoints(struct afs_call *call)
+{
+ struct afs_addr_list *alist;
+ __be32 *bp;
+ u32 uniquifier, size;
+ int ret;
+
+ _enter("{%u,%zu/%u,%u}", call->unmarshall, call->offset, call->count, call->count2);
+
+again:
+ switch (call->unmarshall) {
+ case 0:
+ call->offset = 0;
+ call->unmarshall = 1;
+
+ /* Extract the returned uuid, uniquifier, fsEndpoints count and
+ * either the first fsEndpoint type or the volEndpoints
+ * count if there are no fsEndpoints. */
+ case 1:
+ ret = afs_extract_data(call, call->buffer,
+ sizeof(uuid_t) +
+ 3 * sizeof(__be32),
+ true);
+ if (ret < 0)
+ return ret;
+
+ bp = call->buffer + sizeof(uuid_t);
+ uniquifier = ntohl(*bp++);
+ call->count = ntohl(*bp++);
+ call->count2 = ntohl(*bp); /* Type or next count */
+
+ if (call->count > YFS_MAXENDPOINTS)
+ return -EBADMSG;
+
+ alist = afs_alloc_addrlist(call->count, FS_SERVICE, AFS_FS_PORT);
+ if (!alist)
+ return -ENOMEM;
+ alist->version = uniquifier;
+ call->reply[0] = alist;
+ call->offset = 0;
+
+ if (call->count == 0)
+ goto extract_volendpoints;
+
+ call->unmarshall = 2;
+
+ /* Extract fsEndpoints[] entries */
+ case 2:
+ switch (call->count2) {
+ case YFS_ENDPOINT_IPV4:
+ size = sizeof(__be32) * (1 + 1 + 1);
+ break;
+ case YFS_ENDPOINT_IPV6:
+ size = sizeof(__be32) * (1 + 4 + 1);
+ break;
+ default:
+ return -EBADMSG;
+ }
+
+ size += sizeof(__be32);
+ ret = afs_extract_data(call, call->buffer, size, true);
+ if (ret < 0)
+ return ret;
+
+ alist = call->reply[0];
+ bp = call->buffer;
+ switch (call->count2) {
+ case YFS_ENDPOINT_IPV4:
+ if (ntohl(bp[0]) != sizeof(__be32) * 2)
+ return -EBADMSG;
+ afs_merge_fs_addr4(alist, bp[1], ntohl(bp[2]));
+ bp += 3;
+ break;
+ case YFS_ENDPOINT_IPV6:
+ if (ntohl(bp[0]) != sizeof(__be32) * 5)
+ return -EBADMSG;
+ afs_merge_fs_addr6(alist, bp + 1, ntohl(bp[5]));
+ bp += 6;
+ break;
+ default:
+ return -EBADMSG;
+ }
+
+ /* Got either the type of the next entry or the count of
+ * volEndpoints if no more fsEndpoints.
+ */
+ call->count2 = htonl(*bp++);
+
+ call->offset = 0;
+ call->count--;
+ if (call->count > 0)
+ goto again;
+
+ extract_volendpoints:
+ /* Extract the list of volEndpoints. */
+ call->count = call->count2;
+ if (!call->count)
+ goto end;
+ if (call->count > YFS_MAXENDPOINTS)
+ return -EBADMSG;
+
+ call->unmarshall = 3;
+
+ /* Extract the type of volEndpoints[0]. Normally we would
+ * extract the type of the next endpoint when we extract the
+ * data of the current one, but this is the first...
+ */
+ case 3:
+ ret = afs_extract_data(call, call->buffer, sizeof(__be32), true);
+ if (ret < 0)
+ return ret;
+
+ bp = call->buffer;
+ call->count2 = htonl(*bp++);
+ call->offset = 0;
+ call->unmarshall = 4;
+
+ /* Extract volEndpoints[] entries */
+ case 4:
+ switch (call->count2) {
+ case YFS_ENDPOINT_IPV4:
+ size = sizeof(__be32) * (1 + 1 + 1);
+ break;
+ case YFS_ENDPOINT_IPV6:
+ size = sizeof(__be32) * (1 + 4 + 1);
+ break;
+ default:
+ return -EBADMSG;
+ }
+
+ if (call->count > 1)
+ size += sizeof(__be32);
+ ret = afs_extract_data(call, call->buffer, size, true);
+ if (ret < 0)
+ return ret;
+
+ bp = call->buffer;
+ switch (call->count2) {
+ case YFS_ENDPOINT_IPV4:
+ if (ntohl(bp[0]) != sizeof(__be32) * 2)
+ return -EBADMSG;
+ bp += 3;
+ break;
+ case YFS_ENDPOINT_IPV6:
+ if (ntohl(bp[0]) != sizeof(__be32) * 5)
+ return -EBADMSG;
+ bp += 6;
+ break;
+ default:
+ return -EBADMSG;
+ }
+
+ /* Got either the type of the next entry or the count of
+ * volEndpoints if no more fsEndpoints.
+ */
+ call->offset = 0;
+ call->count--;
+ if (call->count > 0) {
+ call->count2 = htonl(*bp++);
+ goto again;
+ }
+
+ end:
+ call->unmarshall = 5;
+
+ /* Done */
+ case 5:
+ ret = afs_extract_data(call, call->buffer, 0, false);
+ if (ret < 0)
+ return ret;
+ call->unmarshall = 6;
+
+ case 6:
+ break;
+ }
+
+ alist = call->reply[0];
+
+ /* Start with IPv6 if available. */
+ if (alist->nr_ipv4 < alist->nr_addrs)
+ alist->index = alist->nr_ipv4;
+
+ _leave(" = 0 [done]");
+ return 0;
+}
+
+/*
+ * YFSVL.GetEndpoints operation type.
+ */
+static const struct afs_call_type afs_YFSVLGetEndpoints = {
+ .name = "VL.GetEndpoints",
+ .deliver = afs_deliver_yfsvl_get_endpoints,
+ .destructor = afs_vl_get_addrs_u_destructor,
+};
+
+/*
+ * Dispatch an operation to get the addresses for a server, where the server is
+ * nominated by UUID.
+ */
+struct afs_addr_list *afs_yfsvl_get_endpoints(struct afs_net *net,
+ struct afs_addr_cursor *ac,
+ struct key *key,
+ const uuid_t *uuid)
+{
+ struct afs_call *call;
+ __be32 *bp;
+
+ _enter("");
+
+ call = afs_alloc_flat_call(net, &afs_YFSVLGetEndpoints,
+ sizeof(__be32) * 2 + sizeof(*uuid),
+ sizeof(struct in6_addr) + sizeof(__be32) * 3);
+ if (!call)
+ return ERR_PTR(-ENOMEM);
+
+ call->key = key;
+ call->reply[0] = NULL;
+ call->ret_reply0 = true;
+
+ /* Marshall the parameters */
+ bp = call->request;
+ *bp++ = htonl(YVLGETENDPOINTS);
+ *bp++ = htonl(YFS_SERVER_UUID);
+ memcpy(bp, uuid, sizeof(*uuid)); /* Type opr_uuid */
+
+ return (struct afs_addr_list *)afs_make_call(ac, call, GFP_KERNEL, false);
+}
generated by cgit (git 2.34.1) at 2024-06-15 13:17:54 +0000