[0/3] Support multiple ips per hostname

Message

Paulo Alcantara May 11, 2021, 4:36 p.m. UTC

Steve,

Follow a series to handle multiple ip addresses per hostame when
mounting, chasing DFS referrals and reconnecting.

We've defined a maximum number of 16 addresses a hostname can handle
as we did in mount.cifs (resolve_host.c::resolve_host).  If that's not
OK, then we could make it flexible by creating a new mount option like
'maxaddrs=N' or just increase it in both sides.

The mount.cifs(8) patch that passes multiple 'ip=' options to handle
all resolved addresses will be posted soon.

Paulo Alcantara (3):
  cifs: introduce smb3_options_for_each() helper
  cifs: handle multiple ip addresses per hostname
  cifs: fix find_root_ses() when refresing dfs cache

 fs/cifs/cifs_dfs_ref.c |   48 +-
 fs/cifs/cifsglob.h     |   24 +-
 fs/cifs/connect.c      | 1042 ++++++++++++++++++++++++----------------
 fs/cifs/dfs_cache.c    |   12 +-
 fs/cifs/dns_resolve.c  |   72 +--
 fs/cifs/dns_resolve.h  |    5 +-
 fs/cifs/fs_context.c   |   22 +-
 fs/cifs/fs_context.h   |    4 +-
 fs/cifs/misc.c         |   95 +++-
 9 files changed, 828 insertions(+), 496 deletions(-)