diff options
| author | Mark Starovoytov <mstarovoitov@marvell.com> | 2020-03-25 16:01:34 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-03-29 21:34:21 -0700 |
| commit | 791bb3fcafcedd11f9066da9fee9342ecb6904d0 (patch) | |
| tree | 6bccde0e7b60e06436de6c87f5e48c515f7aacfa /drivers/net/macsec.c | |
| parent | f0b5989745c3e0e92424d36869a97e4e8df7ab13 (diff) | |
| download | linux-791bb3fcafcedd11f9066da9fee9342ecb6904d0.tar.bz2 | |
net: macsec: add support for specifying offload upon link creation
This patch adds new netlink attribute to allow a user to (optionally)
specify the desired offload mode immediately upon MACSec link creation.
Separate iproute patch will be required to support this from user space.
Signed-off-by: Mark Starovoytov <mstarovoitov@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/macsec.c')
| -rw-r--r-- | drivers/net/macsec.c | 31 |
1 files changed, 29 insertions, 2 deletions
diff --git a/drivers/net/macsec.c b/drivers/net/macsec.c index 2dad91cba459..da82d7f16a09 100644 --- a/drivers/net/macsec.c +++ b/drivers/net/macsec.c @@ -1469,6 +1469,11 @@ static struct net_device *get_dev_from_nl(struct net *net, return dev; } +static enum macsec_offload nla_get_offload(const struct nlattr *nla) +{ + return (__force enum macsec_offload)nla_get_u8(nla); +} + static sci_t nla_get_sci(const struct nlattr *nla) { return (__force sci_t)nla_get_u64(nla); @@ -4012,8 +4017,16 @@ static int macsec_newlink(struct net *net, struct net_device *dev, macsec->real_dev = real_dev; - /* MACsec offloading is off by default */ - macsec->offload = MACSEC_OFFLOAD_OFF; + if (data && data[IFLA_MACSEC_OFFLOAD]) + macsec->offload = nla_get_offload(data[IFLA_MACSEC_OFFLOAD]); + else + /* MACsec offloading is off by default */ + macsec->offload = MACSEC_OFFLOAD_OFF; + + /* Check if the offloading mode is supported by the underlying layers */ + if (macsec->offload != MACSEC_OFFLOAD_OFF && + !macsec_check_offload(macsec->offload, macsec)) + return -EOPNOTSUPP; if (data && data[IFLA_MACSEC_ICV_LEN]) icv_len = nla_get_u8(data[IFLA_MACSEC_ICV_LEN]); @@ -4056,6 +4069,20 @@ static int macsec_newlink(struct net *net, struct net_device *dev, goto del_dev; } + /* If h/w offloading is available, propagate to the device */ + if (macsec_is_offloaded(macsec)) { + const struct macsec_ops *ops; + struct macsec_context ctx; + + ops = macsec_get_ops(macsec, &ctx); + if (ops) { + ctx.secy = &macsec->secy; + err = macsec_offload(ops->mdo_add_secy, &ctx); + if (err) + goto del_dev; + } + } + err = register_macsec_dev(real_dev, dev); if (err < 0) goto del_dev; |