From: Shyam Prasad N sprasad@microsoft.com
[ Upstream commit 8abcaeaed38109e5ccaf40218e0e9e387f07bfe6 ]
smb sessions and tcons currently hang off primary channel only. Secondary channels have the lists as empty. Whenever there's a need to iterate sessions or tcons, we should use the list in the corresponding primary channel.
Signed-off-by: Shyam Prasad N sprasad@microsoft.com Reviewed-by: Paulo Alcantara (SUSE) pc@cjr.nz Signed-off-by: Steve French stfrench@microsoft.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/cifs/misc.c | 6 +++++- fs/cifs/smb2misc.c | 12 ++++++++++-- fs/cifs/smb2ops.c | 6 +++++- fs/cifs/smb2transport.c | 6 +++++- 4 files changed, 25 insertions(+), 5 deletions(-)
diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c index 87f60f736731..35085fa86636 100644 --- a/fs/cifs/misc.c +++ b/fs/cifs/misc.c @@ -400,6 +400,7 @@ is_valid_oplock_break(char *buffer, struct TCP_Server_Info *srv) { struct smb_hdr *buf = (struct smb_hdr *)buffer; struct smb_com_lock_req *pSMB = (struct smb_com_lock_req *)buf; + struct TCP_Server_Info *pserver; struct cifs_ses *ses; struct cifs_tcon *tcon; struct cifsInodeInfo *pCifsInode; @@ -464,9 +465,12 @@ is_valid_oplock_break(char *buffer, struct TCP_Server_Info *srv) if (!(pSMB->LockType & LOCKING_ANDX_OPLOCK_RELEASE)) return false;
+ /* If server is a channel, select the primary channel */ + pserver = CIFS_SERVER_IS_CHAN(srv) ? srv->primary_server : srv; + /* look up tcon based on tid & uid */ spin_lock(&cifs_tcp_ses_lock); - list_for_each_entry(ses, &srv->smb_ses_list, smb_ses_list) { + list_for_each_entry(ses, &pserver->smb_ses_list, smb_ses_list) { list_for_each_entry(tcon, &ses->tcon_list, tcon_list) { if (tcon->tid != buf->Tid) continue; diff --git a/fs/cifs/smb2misc.c b/fs/cifs/smb2misc.c index d73e5672aac4..3bcd3ac65dc1 100644 --- a/fs/cifs/smb2misc.c +++ b/fs/cifs/smb2misc.c @@ -135,6 +135,7 @@ static __u32 get_neg_ctxt_len(struct smb2_hdr *hdr, __u32 len, int smb2_check_message(char *buf, unsigned int len, struct TCP_Server_Info *server) { + struct TCP_Server_Info *pserver; struct smb2_hdr *shdr = (struct smb2_hdr *)buf; struct smb2_pdu *pdu = (struct smb2_pdu *)shdr; int hdr_size = sizeof(struct smb2_hdr); @@ -143,6 +144,9 @@ smb2_check_message(char *buf, unsigned int len, struct TCP_Server_Info *server) __u32 calc_len; /* calculated length */ __u64 mid;
+ /* If server is a channel, select the primary channel */ + pserver = CIFS_SERVER_IS_CHAN(server) ? server->primary_server : server; + /* * Add function to do table lookup of StructureSize by command * ie Validate the wct via smb2_struct_sizes table above @@ -155,7 +159,7 @@ smb2_check_message(char *buf, unsigned int len, struct TCP_Server_Info *server)
/* decrypt frame now that it is completely read in */ spin_lock(&cifs_tcp_ses_lock); - list_for_each_entry(iter, &server->smb_ses_list, smb_ses_list) { + list_for_each_entry(iter, &pserver->smb_ses_list, smb_ses_list) { if (iter->Suid == le64_to_cpu(thdr->SessionId)) { ses = iter; break; @@ -671,6 +675,7 @@ bool smb2_is_valid_oplock_break(char *buffer, struct TCP_Server_Info *server) { struct smb2_oplock_break *rsp = (struct smb2_oplock_break *)buffer; + struct TCP_Server_Info *pserver; struct cifs_ses *ses; struct cifs_tcon *tcon; struct cifsInodeInfo *cinode; @@ -691,9 +696,12 @@ smb2_is_valid_oplock_break(char *buffer, struct TCP_Server_Info *server)
cifs_dbg(FYI, "oplock level 0x%x\n", rsp->OplockLevel);
+ /* If server is a channel, select the primary channel */ + pserver = CIFS_SERVER_IS_CHAN(server) ? server->primary_server : server; + /* look up tcon based on tid & uid */ spin_lock(&cifs_tcp_ses_lock); - list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { + list_for_each_entry(ses, &pserver->smb_ses_list, smb_ses_list) { list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
spin_lock(&tcon->open_file_lock); diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index 14376437187a..c258a7b122b6 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -2288,14 +2288,18 @@ static void smb2_is_network_name_deleted(char *buf, struct TCP_Server_Info *server) { struct smb2_hdr *shdr = (struct smb2_hdr *)buf; + struct TCP_Server_Info *pserver; struct cifs_ses *ses; struct cifs_tcon *tcon;
if (shdr->Status != STATUS_NETWORK_NAME_DELETED) return;
+ /* If server is a channel, select the primary channel */ + pserver = CIFS_SERVER_IS_CHAN(server) ? server->primary_server : server; + spin_lock(&cifs_tcp_ses_lock); - list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { + list_for_each_entry(ses, &pserver->smb_ses_list, smb_ses_list) { list_for_each_entry(tcon, &ses->tcon_list, tcon_list) { if (tcon->tid == le32_to_cpu(shdr->Id.SyncId.TreeId)) { spin_lock(&tcon->tc_lock); diff --git a/fs/cifs/smb2transport.c b/fs/cifs/smb2transport.c index 4640fc4a8b13..da85cfd7803b 100644 --- a/fs/cifs/smb2transport.c +++ b/fs/cifs/smb2transport.c @@ -140,9 +140,13 @@ int smb2_get_sign_key(__u64 ses_id, struct TCP_Server_Info *server, u8 *key) static struct cifs_ses * smb2_find_smb_ses_unlocked(struct TCP_Server_Info *server, __u64 ses_id) { + struct TCP_Server_Info *pserver; struct cifs_ses *ses;
- list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { + /* If server is a channel, select the primary channel */ + pserver = CIFS_SERVER_IS_CHAN(server) ? server->primary_server : server; + + list_for_each_entry(ses, &pserver->smb_ses_list, smb_ses_list) { if (ses->Suid != ses_id) continue; ++ses->ses_count;