[PATCH net-next 1/2] cxgb4: RSS table is 4k for T6
DORMANTno replies
From: Ganesh Goudar <hidden>
Date: 2017-12-19 01:40:05
Subsystem:
cxgb4 ethernet driver (cxgb4), networking drivers, the rest · Maintainers:
Potnuri Bharat Teja, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
RSS table is 4k for T6 and later cards, add check for the same. Signed-off-by: Ganesh Goudar <redacted> --- drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c | 5 ++-- drivers/net/ethernet/chelsio/cxgb4/cxgb4.h | 1 + drivers/net/ethernet/chelsio/cxgb4/cxgb4_cudbg.c | 2 +- drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c | 7 ++--- drivers/net/ethernet/chelsio/cxgb4/t4_hw.c | 13 +++++++-- drivers/net/ethernet/chelsio/cxgb4/t4_hw.h | 31 +++++++++++----------- 6 files changed, 36 insertions(+), 23 deletions(-)
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c b/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c
index d73fb6a..336670d 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c@@ -1004,9 +1004,10 @@ int cudbg_collect_rss(struct cudbg_init *pdbg_init, { struct adapter *padap = pdbg_init->adap; struct cudbg_buffer temp_buff = { 0 }; - int rc; + int rc, nentries; - rc = cudbg_get_buff(dbg_buff, RSS_NENTRIES * sizeof(u16), &temp_buff); + nentries = t4_chip_rss_size(padap); + rc = cudbg_get_buff(dbg_buff, nentries * sizeof(u16), &temp_buff); if (rc) return rc;
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
index b1df2aa..69d0b64 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h@@ -1528,6 +1528,7 @@ int t4_init_portinfo(struct port_info *pi, int mbox, int port, int pf, int vf, u8 mac[]); int t4_port_init(struct adapter *adap, int mbox, int pf, int vf); void t4_fatal_err(struct adapter *adapter); +unsigned int t4_chip_rss_size(struct adapter *adapter); int t4_config_rss_range(struct adapter *adapter, int mbox, unsigned int viid, int start, int n, const u16 *rspq, unsigned int nrspq); int t4_config_glbl_rss(struct adapter *adapter, int mbox, unsigned int mode,
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_cudbg.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_cudbg.c
index 41c8736..581d628 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_cudbg.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_cudbg.c@@ -179,7 +179,7 @@ static u32 cxgb4_get_entity_length(struct adapter *adap, u32 entity) len = cudbg_mbytes_to_bytes(len); break; case CUDBG_RSS: - len = RSS_NENTRIES * sizeof(u16); + len = t4_chip_rss_size(adap) * sizeof(u16); break; case CUDBG_RSS_VF_CONF: len = adap->params.arch.vfcount *
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
index 4956e42..200bf67 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c@@ -2021,11 +2021,12 @@ static int rss_show(struct seq_file *seq, void *v, int idx) static int rss_open(struct inode *inode, struct file *file) { - int ret; - struct seq_tab *p; struct adapter *adap = inode->i_private; + int ret, nentries; + struct seq_tab *p; - p = seq_open_tab(file, RSS_NENTRIES / 8, 8 * sizeof(u16), 0, rss_show); + nentries = t4_chip_rss_size(adap); + p = seq_open_tab(file, nentries / 8, 8 * sizeof(u16), 0, rss_show); if (!p) return -ENOMEM;
diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
index f044717..242bcdd 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c@@ -4927,6 +4927,14 @@ void t4_intr_disable(struct adapter *adapter) t4_set_reg_field(adapter, PL_INT_MAP0_A, 1 << pf, 0); } +unsigned int t4_chip_rss_size(struct adapter *adap) +{ + if (CHELSIO_CHIP_VERSION(adap->params.chip) <= CHELSIO_T5) + return RSS_NENTRIES; + else + return T6_RSS_NENTRIES; +} + /** * t4_config_rss_range - configure a portion of the RSS mapping table * @adapter: the adapter
@@ -5065,10 +5073,11 @@ static int rd_rss_row(struct adapter *adap, int row, u32 *val) */ int t4_read_rss(struct adapter *adapter, u16 *map) { + int i, ret, nentries; u32 val; - int i, ret; - for (i = 0; i < RSS_NENTRIES / 2; ++i) { + nentries = t4_chip_rss_size(adapter); + for (i = 0; i < nentries / 2; ++i) { ret = rd_rss_row(adapter, i, &val); if (ret) return ret;
diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.h b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.h
index 872a91b..361d503 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.h
+++ b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.h@@ -38,21 +38,22 @@ #include <linux/types.h> enum { - NCHAN = 4, /* # of HW channels */ - MAX_MTU = 9600, /* max MAC MTU, excluding header + FCS */ - EEPROMSIZE = 17408, /* Serial EEPROM physical size */ - EEPROMVSIZE = 32768, /* Serial EEPROM virtual address space size */ - EEPROMPFSIZE = 1024, /* EEPROM writable area size for PFn, n>0 */ - RSS_NENTRIES = 2048, /* # of entries in RSS mapping table */ - TCB_SIZE = 128, /* TCB size */ - NMTUS = 16, /* size of MTU table */ - NCCTRL_WIN = 32, /* # of congestion control windows */ - NTX_SCHED = 8, /* # of HW Tx scheduling queues */ - PM_NSTATS = 5, /* # of PM stats */ - T6_PM_NSTATS = 7, /* # of PM stats in T6 */ - MBOX_LEN = 64, /* mailbox size in bytes */ - TRACE_LEN = 112, /* length of trace data and mask */ - FILTER_OPT_LEN = 36, /* filter tuple width for optional components */ + NCHAN = 4, /* # of HW channels */ + MAX_MTU = 9600, /* max MAC MTU, excluding header + FCS */ + EEPROMSIZE = 17408,/* Serial EEPROM physical size */ + EEPROMVSIZE = 32768,/* Serial EEPROM virtual address space size */ + EEPROMPFSIZE = 1024, /* EEPROM writable area size for PFn, n>0 */ + RSS_NENTRIES = 2048, /* # of entries in RSS mapping table */ + T6_RSS_NENTRIES = 4096, /* # of entries in RSS mapping table */ + TCB_SIZE = 128, /* TCB size */ + NMTUS = 16, /* size of MTU table */ + NCCTRL_WIN = 32, /* # of congestion control windows */ + NTX_SCHED = 8, /* # of HW Tx scheduling queues */ + PM_NSTATS = 5, /* # of PM stats */ + T6_PM_NSTATS = 7, /* # of PM stats in T6 */ + MBOX_LEN = 64, /* mailbox size in bytes */ + TRACE_LEN = 112, /* length of trace data and mask */ + FILTER_OPT_LEN = 36, /* filter tuple width for optional components */ }; enum {
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2.1.0