diff options
Diffstat (limited to 'fs/dlm/midcomms.c')
| -rw-r--r-- | fs/dlm/midcomms.c | 85 |
1 files changed, 72 insertions, 13 deletions
diff --git a/fs/dlm/midcomms.c b/fs/dlm/midcomms.c index 7ae39ec8d9b0..3635e42b0669 100644 --- a/fs/dlm/midcomms.c +++ b/fs/dlm/midcomms.c @@ -137,6 +137,7 @@ #include "dlm_internal.h" #include "lowcomms.h" #include "config.h" +#include "memory.h" #include "lock.h" #include "util.h" #include "midcomms.h" @@ -220,6 +221,12 @@ DEFINE_STATIC_SRCU(nodes_srcu); */ static DEFINE_MUTEX(close_lock); +struct kmem_cache *dlm_midcomms_cache_create(void) +{ + return kmem_cache_create("dlm_mhandle", sizeof(struct dlm_mhandle), + 0, 0, NULL); +} + static inline const char *dlm_state_str(int state) { switch (state) { @@ -279,7 +286,7 @@ static void dlm_mhandle_release(struct rcu_head *rcu) struct dlm_mhandle *mh = container_of(rcu, struct dlm_mhandle, rcu); dlm_lowcomms_put_msg(mh->msg); - kfree(mh); + dlm_free_mhandle(mh); } static void dlm_mhandle_delete(struct midcomms_node *node, @@ -909,11 +916,11 @@ int dlm_process_incoming_buffer(int nodeid, unsigned char *buf, int len) if (msglen > len) break; - switch (le32_to_cpu(hd->h_version)) { - case DLM_VERSION_3_1: + switch (hd->h_version) { + case cpu_to_le32(DLM_VERSION_3_1): dlm_midcomms_receive_buffer_3_1((union dlm_packet *)ptr, nodeid); break; - case DLM_VERSION_3_2: + case cpu_to_le32(DLM_VERSION_3_2): dlm_midcomms_receive_buffer_3_2((union dlm_packet *)ptr, nodeid); break; default: @@ -969,7 +976,7 @@ void dlm_midcomms_receive_done(int nodeid) spin_unlock(&node->state_lock); /* do nothing FIN has it's own ack send */ break; - }; + } srcu_read_unlock(&nodes_srcu, idx); } @@ -1020,8 +1027,10 @@ static void dlm_fill_opts_header(struct dlm_opts *opts, uint16_t inner_len, header_out(&opts->o_header); } -static void midcomms_new_msg_cb(struct dlm_mhandle *mh) +static void midcomms_new_msg_cb(void *data) { + struct dlm_mhandle *mh = data; + atomic_inc(&mh->node->send_queue_cnt); spin_lock(&mh->node->send_queue_lock); @@ -1071,10 +1080,12 @@ struct dlm_mhandle *dlm_midcomms_get_mhandle(int nodeid, int len, /* this is a bug, however we going on and hope it will be resolved */ WARN_ON(test_bit(DLM_NODE_FLAG_STOP_TX, &node->flags)); - mh = kzalloc(sizeof(*mh), GFP_NOFS); + mh = dlm_allocate_mhandle(); if (!mh) goto err; + mh->committed = false; + mh->ack_rcv = NULL; mh->idx = idx; mh->node = node; @@ -1083,7 +1094,7 @@ struct dlm_mhandle *dlm_midcomms_get_mhandle(int nodeid, int len, msg = dlm_lowcomms_new_msg(nodeid, len, allocation, ppc, NULL, NULL); if (!msg) { - kfree(mh); + dlm_free_mhandle(mh); goto err; } @@ -1092,13 +1103,13 @@ struct dlm_mhandle *dlm_midcomms_get_mhandle(int nodeid, int len, msg = dlm_midcomms_get_msg_3_2(mh, nodeid, len, allocation, ppc); if (!msg) { - kfree(mh); + dlm_free_mhandle(mh); goto err; } break; default: - kfree(mh); + dlm_free_mhandle(mh); WARN_ON(1); goto err; } @@ -1134,7 +1145,7 @@ void dlm_midcomms_commit_mhandle(struct dlm_mhandle *mh) dlm_lowcomms_commit_msg(mh->msg); dlm_lowcomms_put_msg(mh->msg); /* mh is not part of rcu list in this case */ - kfree(mh); + dlm_free_mhandle(mh); break; case DLM_VERSION_3_2: dlm_midcomms_commit_msg_3_2(mh); @@ -1231,7 +1242,7 @@ void dlm_midcomms_add_member(int nodeid) } node->users++; - pr_debug("users inc count %d\n", node->users); + pr_debug("node %d users inc count %d\n", nodeid, node->users); spin_unlock(&node->state_lock); srcu_read_unlock(&nodes_srcu, idx); @@ -1254,7 +1265,7 @@ void dlm_midcomms_remove_member(int nodeid) spin_lock(&node->state_lock); node->users--; - pr_debug("users dec count %d\n", node->users); + pr_debug("node %d users dec count %d\n", nodeid, node->users); /* hitting users count to zero means the * other side is running dlm_midcomms_stop() @@ -1425,3 +1436,51 @@ int dlm_midcomms_close(int nodeid) return ret; } + +/* debug functionality to send raw dlm msg from user space */ +struct dlm_rawmsg_data { + struct midcomms_node *node; + void *buf; +}; + +static void midcomms_new_rawmsg_cb(void *data) +{ + struct dlm_rawmsg_data *rd = data; + struct dlm_header *h = rd->buf; + + switch (h->h_version) { + case cpu_to_le32(DLM_VERSION_3_1): + break; + default: + switch (h->h_cmd) { + case DLM_OPTS: + if (!h->u.h_seq) + h->u.h_seq = rd->node->seq_send++; + break; + default: + break; + } + break; + } +} + +int dlm_midcomms_rawmsg_send(struct midcomms_node *node, void *buf, + int buflen) +{ + struct dlm_rawmsg_data rd; + struct dlm_msg *msg; + char *msgbuf; + + rd.node = node; + rd.buf = buf; + + msg = dlm_lowcomms_new_msg(node->nodeid, buflen, GFP_NOFS, + &msgbuf, midcomms_new_rawmsg_cb, &rd); + if (!msg) + return -ENOMEM; + + memcpy(msgbuf, buf, buflen); + dlm_lowcomms_commit_msg(msg); + return 0; +} + |