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| author | Julian Wiedmann | 2019-06-27 17:01:22 +0200 |
|---|---|---|
| committer | David S. Miller | 2019-06-27 19:18:23 +0200 |
| commit | a59d121da2394dcb84a42bf2fe436180ce2afe5c (patch) | |
| tree | 08ded311c9d335eeff50d82c699b48a08a6cff98 /drivers/s390/net/qeth_core.h | |
| parent | net/smc: common release code for non-accepted sockets (diff) | |
| download | kernel-qcow2-linux-a59d121da2394dcb84a42bf2fe436180ce2afe5c.tar.gz kernel-qcow2-linux-a59d121da2394dcb84a42bf2fe436180ce2afe5c.tar.xz kernel-qcow2-linux-a59d121da2394dcb84a42bf2fe436180ce2afe5c.zip | |
s390/qeth: dynamically allocate simple IPA cmds
This patch reduces the usage of the write channel's static cmd buffers,
by dynamically allocating all simple IPA cmds (eg. STARTLAN, SETVMAC).
It also converts the OSN path.
Doing so requires some changes to how we calculate the cmd length.
Currently when building IPA cmds, we're quite generous in how much data
we send down to the device (basically the size of the biggest cmd we
know). This is no real concern at the moment, since the static cmd
buffers are backed with zeroed pages. But for dynamic allocations, the
exact length matters. So this patch also adds the needed length
calculations to each cmd path.
Commands that have multiple subtypes (eg. SETADP) of differing length
will be converted with follow-up patches.
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/s390/net/qeth_core.h')
| -rw-r--r-- | drivers/s390/net/qeth_core.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h index 5bcdede5e955..42aa4a21a4c2 100644 --- a/drivers/s390/net/qeth_core.h +++ b/drivers/s390/net/qeth_core.h @@ -551,6 +551,7 @@ enum qeth_card_states { * Protocol versions */ enum qeth_prot_versions { + QETH_PROT_NONE = 0x0000, QETH_PROT_IPV4 = 0x0004, QETH_PROT_IPV6 = 0x0006, }; @@ -995,6 +996,14 @@ int qeth_send_ipa_cmd(struct qeth_card *, struct qeth_cmd_buffer *, void *); struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *, enum qeth_ipa_cmds, enum qeth_prot_versions); +struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card, + enum qeth_ipa_cmds cmd_code, + enum qeth_prot_versions prot, + unsigned int data_length); +struct qeth_cmd_buffer *qeth_alloc_cmd(struct qeth_channel *channel, + unsigned int length, unsigned int ccws, + long timeout); + struct sk_buff *qeth_core_get_next_skb(struct qeth_card *, struct qeth_qdio_buffer *, struct qdio_buffer_element **, int *, struct qeth_hdr **); @@ -1012,7 +1021,6 @@ void qeth_release_buffer(struct qeth_cmd_buffer *iob); void qeth_notify_reply(struct qeth_reply *reply, int reason); void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, u16 cmd_length); -struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel); int qeth_query_switch_attributes(struct qeth_card *card, struct qeth_switch_info *sw_info); int qeth_query_card_info(struct qeth_card *card, |